[lldb] Restructure test folders to match LLDB command hierarchy

Summary:
As discussed on lldb-dev, this patch moves some LLDB tests into a hierarchy that more closely
resembles the commands we use in the LLDB interpreter. This patch should only move tests
that use the command interpreter and shouldn't touch any tests that primarily test the SB API.

Reviewers: #lldb, jfb, JDevlieghere

Reviewed By: #lldb, JDevlieghere

Subscribers: dexonsmith, arphaman, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D67033

llvm-svn: 370605

69 files changed, 1169 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/TestImportStdModule.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/TestImportStdModule.py
new file mode 100644
index 00000000000..19e02ca84c9
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/TestImportStdModule.py
@@ -0,0 +1,56 @@
+"""
+Test importing the 'std' C++ module and evaluate expressions with it.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class ImportStdModule(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        # Activate importing of std module.
+        self.runCmd("settings set target.import-std-module true")
+        # Calling some normal std functions that return non-template types.
+        self.expect("expr std::abs(-42)", substrs=['(int) $0 = 42'])
+        self.expect("expr std::div(2, 1).quot", substrs=['(int) $1 = 2'])
+        # Using types from std.
+        self.expect("expr (std::size_t)33U", substrs=['(size_t) $2 = 33'])
+        # Calling templated functions that return non-template types.
+        self.expect("expr char char_a = 'b'; char char_b = 'a'; std::swap(char_a, char_b); char_a",
+                    substrs=["(char) $3 = 'a'"])
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test_non_cpp_language(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        # Activate importing of std module.
+        self.runCmd("settings set target.import-std-module true")
+        # These languages don't support C++ modules, so they shouldn't
+        # be able to evaluate the expression.
+        self.expect("expr -l C -- std::abs(-42)", error=True)
+        self.expect("expr -l C99 -- std::abs(-42)", error=True)
+        self.expect("expr -l C11 -- std::abs(-42)", error=True)
+        self.expect("expr -l ObjC -- std::abs(-42)", error=True)
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/main.cpp
new file mode 100644
index 00000000000..2f6d078daa3
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/basic/main.cpp
@@ -0,0 +1,7 @@
+// We need to import any std module. It doesn't matter which one.
+#include <iostream>
+
+int main(int argc, char **argv) {
+  std::cout << "Test" << std::endl;
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/TestStdModuleWithConflicts.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/TestStdModuleWithConflicts.py
new file mode 100644
index 00000000000..2abaece27fe
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/TestStdModuleWithConflicts.py
@@ -0,0 +1,36 @@
+"""
+Test importing the 'std' C++ module and check if we can handle
+prioritizing the conflicting functions from debug info and std
+module.
+
+See also import-std-module/basic/TestImportStdModule.py for
+the same test on a 'clean' code base without conflicts.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class TestImportStdModuleConflicts(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+        self.expect("expr std::abs(-42)", substrs=['(int) $0 = 42'])
+        self.expect("expr std::div(2, 1).quot", substrs=['(int) $1 = 2'])
+        self.expect("expr (std::size_t)33U", substrs=['(size_t) $2 = 33'])
+        self.expect("expr char char_a = 'b'; char char_b = 'a'; std::swap(char_a, char_b); char_a",
+                    substrs=["(char) $3 = 'a'"])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/main.cpp
new file mode 100644
index 00000000000..e49b862a36c
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/conflicts/main.cpp
@@ -0,0 +1,10 @@
+#include <cstdlib>
+#include <utility>
+
+int main(int argc, char **argv) {
+  std::size_t f = argc;
+  f = std::abs(argc);
+  f = std::div(argc * 2, argc).quot;
+  std::swap(f, f);
+  return f; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/TestBasicDeque.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/TestBasicDeque.py
new file mode 100644
index 00000000000..0ede19e8350
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/TestBasicDeque.py
@@ -0,0 +1,41 @@
+"""
+Test basic std::list functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestBasicDeque(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front()", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a.back()", substrs=['(int) $2 = 2'])
+
+        self.expect("expr std::sort(a.begin(), a.end())")
+        self.expect("expr (int)a.front()", substrs=['(int) $3 = 1'])
+        self.expect("expr (int)a.back()", substrs=['(int) $4 = 3'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front()", substrs=['(int) $5 = 3'])
+        self.expect("expr (int)a.back()", substrs=['(int) $6 = 1'])
+
+        self.expect("expr (int)(*a.begin())", substrs=['(int) $7 = 3'])
+        self.expect("expr (int)(*a.rbegin())", substrs=['(int) $8 = 1'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/main.cpp
new file mode 100644
index 00000000000..5bed55674bf
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-basic/main.cpp
@@ -0,0 +1,6 @@
+#include <deque>
+
+int main(int argc, char **argv) {
+  std::deque<int> a = {3, 1, 2};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDeque.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDeque.py
new file mode 100644
index 00000000000..eeea34819dd
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDeque.py
@@ -0,0 +1,37 @@
+"""
+Test std::deque functionality with a decl from dbg info as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestDbgInfoContentDeque(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front().a", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a.back().a", substrs=['(int) $2 = 2'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front().a", substrs=['(int) $3 = 2'])
+        self.expect("expr (int)a.back().a", substrs=['(int) $4 = 3'])
+
+        self.expect("expr (int)(a.begin()->a)", substrs=['(int) $5 = 2'])
+        self.expect("expr (int)(a.rbegin()->a)", substrs=['(int) $6 = 3'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..f8fd1fb2dd9
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/deque-dbg-info-content/main.cpp
@@ -0,0 +1,10 @@
+#include <deque>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::deque<Foo> a = {{3}, {1}, {2}};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/TestBasicForwardList.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/TestBasicForwardList.py
new file mode 100644
index 00000000000..528d555e0af
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/TestBasicForwardList.py
@@ -0,0 +1,34 @@
+"""
+Test basic std::forward_list functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestBasicForwardList(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)std::distance(a.begin(), a.end())", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front()", substrs=['(int) $1 = 3'])
+
+        self.expect("expr a.sort()")
+        self.expect("expr (int)a.front()", substrs=['(int) $2 = 1'])
+
+        self.expect("expr (int)(*a.begin())", substrs=['(int) $3 = 1'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/main.cpp
new file mode 100644
index 00000000000..4f5e30f0629
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-basic/main.cpp
@@ -0,0 +1,6 @@
+#include <forward_list>
+
+int main(int argc, char **argv) {
+  std::forward_list<int> a = {3, 1, 2};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/TestDbgInfoContentForwardList.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/TestDbgInfoContentForwardList.py
new file mode 100644
index 00000000000..a2fc5598930
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/TestDbgInfoContentForwardList.py
@@ -0,0 +1,31 @@
+"""
+Test std::forward_list functionality with a decl from debug info as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestDbgInfoContentForwardList(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)std::distance(a.begin(), a.end())", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front().a", substrs=['(int) $1 = 3'])
+
+        self.expect("expr (int)(a.begin()->a)", substrs=['(int) $2 = 3'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..b1ffc4b24cd
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/forward_list-dbg-info-content/main.cpp
@@ -0,0 +1,10 @@
+#include <forward_list>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::forward_list<Foo> a = {{3}, {1}, {2}};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/TestBasicList.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/TestBasicList.py
new file mode 100644
index 00000000000..154c8ed7bd0
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/TestBasicList.py
@@ -0,0 +1,41 @@
+"""
+Test basic std::list functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestBasicList(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front()", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a.back()", substrs=['(int) $2 = 2'])
+
+        self.expect("expr a.sort()")
+        self.expect("expr (int)a.front()", substrs=['(int) $3 = 1'])
+        self.expect("expr (int)a.back()", substrs=['(int) $4 = 3'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front()", substrs=['(int) $5 = 3'])
+        self.expect("expr (int)a.back()", substrs=['(int) $6 = 1'])
+
+        self.expect("expr (int)(*a.begin())", substrs=['(int) $7 = 3'])
+        self.expect("expr (int)(*a.rbegin())", substrs=['(int) $8 = 1'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/main.cpp
new file mode 100644
index 00000000000..e54719a02fb
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-basic/main.cpp
@@ -0,0 +1,6 @@
+#include <list>
+
+int main(int argc, char **argv) {
+  std::list<int> a = {3, 1, 2};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/TestDbgInfoContentList.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/TestDbgInfoContentList.py
new file mode 100644
index 00000000000..713ec1abb85
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/TestDbgInfoContentList.py
@@ -0,0 +1,38 @@
+"""
+Test basic std::list functionality but with a declaration from
+the debug info (the Foo struct) as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestDbgInfoContentList(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front().a", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a.back().a", substrs=['(int) $2 = 2'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front().a", substrs=['(int) $3 = 2'])
+        self.expect("expr (int)a.back().a", substrs=['(int) $4 = 3'])
+
+        self.expect("expr (int)(a.begin()->a)", substrs=['(int) $5 = 2'])
+        self.expect("expr (int)(a.rbegin()->a)", substrs=['(int) $6 = 3'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..3cfb35f8c6b
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/list-dbg-info-content/main.cpp
@@ -0,0 +1,10 @@
+#include <list>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::list<Foo> a = {{3}, {1}, {2}};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/TestMissingStdModule.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/TestMissingStdModule.py
new file mode 100644
index 00000000000..f4d3d1fd492
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/TestMissingStdModule.py
@@ -0,0 +1,40 @@
+"""
+Test that importing the std module on a compile unit
+that doesn't use the std module will not break LLDB.
+
+It's not really specified at the moment what kind of
+error we should report back to the user in this
+situation. Currently Clang will just complain that
+the std module doesn't exist or can't be loaded.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class STLTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        # Activate importing of std module.
+        self.runCmd("settings set target.import-std-module true")
+
+        # Run some commands that should all fail without our std module.
+        self.expect("expr std::abs(-42)", error=True)
+        self.expect("expr std::div(2, 1).quot", error=True)
+        self.expect("expr (std::size_t)33U", error=True)
+        self.expect("expr char a = 'b'; char b = 'a'; std::swap(a, b); a",
+                    error=True)
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/main.cpp
new file mode 100644
index 00000000000..c93e9d0ec8a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/no-std-module/main.cpp
@@ -0,0 +1,5 @@
+// We don't import any std module here.
+
+int main(int argc, char **argv) {
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/TestQueue.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/TestQueue.py
new file mode 100644
index 00000000000..aad1b11719b
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/TestQueue.py
@@ -0,0 +1,47 @@
+"""
+Tests std::queue functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestQueue(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        # Test std::queue functionality with a std::deque.
+        self.expect("expr q_deque.pop()")
+        self.expect("expr q_deque.push({4})")
+        self.expect("expr (size_t)q_deque.size()", substrs=['(size_t) $0 = 1'])
+        self.expect("expr (int)q_deque.front().i", substrs=['(int) $1 = 4'])
+        self.expect("expr (int)q_deque.back().i", substrs=['(int) $2 = 4'])
+        self.expect("expr q_deque.empty()", substrs=['(bool) $3 = false'])
+        self.expect("expr q_deque.pop()")
+        self.expect("expr q_deque.emplace(5)")
+        self.expect("expr (int)q_deque.front().i", substrs=['(int) $4 = 5'])
+
+        # Test std::queue functionality with a std::list.
+        self.expect("expr q_list.pop()")
+        self.expect("expr q_list.push({4})")
+        self.expect("expr (size_t)q_list.size()", substrs=['(size_t) $5 = 1'])
+        self.expect("expr (int)q_list.front().i", substrs=['(int) $6 = 4'])
+        self.expect("expr (int)q_list.back().i", substrs=['(int) $7 = 4'])
+        self.expect("expr q_list.empty()", substrs=['(bool) $8 = false'])
+        self.expect("expr q_list.pop()")
+        self.expect("expr q_list.emplace(5)")
+        self.expect("expr (int)q_list.front().i", substrs=['(int) $9 = 5'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/main.cpp
new file mode 100644
index 00000000000..66e8f02c273
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/queue/main.cpp
@@ -0,0 +1,16 @@
+#include <deque>
+#include <list>
+#include <queue>
+
+struct C {
+  // Constructor for testing emplace.
+  C(int i) : i(i) {};
+  int i;
+};
+
+int main(int argc, char **argv) {
+  // std::deque is the default container.
+  std::queue<C> q_deque({{1}});
+  std::queue<C, std::list<C>> q_list({{1}});
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/TestSharedPtrDbgInfoContent.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/TestSharedPtrDbgInfoContent.py
new file mode 100644
index 00000000000..028798f72f3
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/TestSharedPtrDbgInfoContent.py
@@ -0,0 +1,33 @@
+"""
+Test std::shared_ptr functionality with a class from debug info as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestSharedPtrDbgInfoContent(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)s->a", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(s->a = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)s->a", substrs=['(int) $2 = 5'])
+        self.expect("expr (bool)s", substrs=['(bool) $3 = true'])
+        self.expect("expr s.reset()")
+        self.expect("expr (bool)s", substrs=['(bool) $4 = false'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..73664f1c83a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr-dbg-info-content/main.cpp
@@ -0,0 +1,11 @@
+#include <memory>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::shared_ptr<Foo> s(new Foo);
+  s->a = 3;
+  return s->a; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/TestSharedPtr.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/TestSharedPtr.py
new file mode 100644
index 00000000000..6f1e7b12d1f
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/TestSharedPtr.py
@@ -0,0 +1,33 @@
+"""
+Test basic std::shared_ptr functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestSharedPtr(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)*s", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(*s = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)*s", substrs=['(int) $2 = 5'])
+        self.expect("expr (bool)s", substrs=['(bool) $3 = true'])
+        self.expect("expr s.reset()")
+        self.expect("expr (bool)s", substrs=['(bool) $4 = false'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/main.cpp
new file mode 100644
index 00000000000..cb81754087f
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/shared_ptr/main.cpp
@@ -0,0 +1,7 @@
+#include <memory>
+
+int main(int argc, char **argv) {
+  std::shared_ptr<int> s(new int);
+  *s = 3;
+  return *s; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/TestStack.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/TestStack.py
new file mode 100644
index 00000000000..1c2e5da54ed
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/TestStack.py
@@ -0,0 +1,49 @@
+"""
+Tests std::stack functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestStack(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        # Test std::stack functionality with a std::deque.
+        self.expect("expr s_deque.pop()")
+        self.expect("expr s_deque.push({4})")
+        self.expect("expr (size_t)s_deque.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)s_deque.top().i", substrs=['(int) $1 = 4'])
+        self.expect("expr s_deque.emplace(5)")
+        self.expect("expr (int)s_deque.top().i", substrs=['(int) $2 = 5'])
+
+        # Test std::stack functionality with a std::vector.
+        self.expect("expr s_vector.pop()")
+        self.expect("expr s_vector.push({4})")
+        self.expect("expr (size_t)s_vector.size()", substrs=['(size_t) $3 = 3'])
+        self.expect("expr (int)s_vector.top().i", substrs=['(int) $4 = 4'])
+        self.expect("expr s_vector.emplace(5)")
+        self.expect("expr (int)s_vector.top().i", substrs=['(int) $5 = 5'])
+
+        # Test std::stack functionality with a std::list.
+        self.expect("expr s_list.pop()")
+        self.expect("expr s_list.push({4})")
+        self.expect("expr (size_t)s_list.size()", substrs=['(size_t) $6 = 3'])
+        self.expect("expr (int)s_list.top().i", substrs=['(int) $7 = 4'])
+        self.expect("expr s_list.emplace(5)")
+        self.expect("expr (int)s_list.top().i", substrs=['(int) $8 = 5'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/main.cpp
new file mode 100644
index 00000000000..0ce94990733
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/stack/main.cpp
@@ -0,0 +1,17 @@
+#include <list>
+#include <stack>
+#include <vector>
+
+struct C {
+  // Constructor for testing emplace.
+  C(int i) : i(i) {};
+  int i;
+};
+
+int main(int argc, char **argv) {
+  // std::deque is the default container.
+  std::stack<C> s_deque({{1}, {2}, {3}});
+  std::stack<C, std::vector<C>> s_vector({{1}, {2}, {3}});
+  std::stack<C, std::list<C>> s_list({{1}, {2}, {3}});
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/Makefile
new file mode 100644
index 00000000000..e04d73ea487
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/Makefile
@@ -0,0 +1,10 @@
+LEVEL = ../../../make
+# We don't have any standard include directories, so we can't
+# parse the test_common.h header we usually inject as it includes
+# system headers.
+NO_TEST_COMMON_H := 1
+
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXXFLAGS += -I $(SRCDIR)/root/usr/include/c++/include/ -I $(SRCDIR)/root/usr/include/ -nostdinc -nostdinc++ -nostdlib++
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/TestStdModuleSysroot.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/TestStdModuleSysroot.py
new file mode 100644
index 00000000000..dfd90e80e45
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/TestStdModuleSysroot.py
@@ -0,0 +1,34 @@
+"""
+Test that we respect the sysroot when building the std module.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+import os
+
+class ImportStdModule(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        sysroot = os.path.join(os.getcwd(), "root")
+
+        # Set the sysroot.
+        self.runCmd("platform select --sysroot '" + sysroot + "' host", CURRENT_EXECUTABLE_SET)
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        # Call our custom function in our sysroot std module.
+        # If this gives us the correct result, then we used the sysroot.
+        self.expect("expr std::myabs(-42)", substrs=['(int) $0 = 42'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/main.cpp
new file mode 100644
index 00000000000..2fbc76b9a76
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/main.cpp
@@ -0,0 +1,6 @@
+#include <algorithm>
+
+int main(int argc, char **argv) {
+  libc_struct s;
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/algorithm b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/algorithm
new file mode 100644
index 00000000000..e8cbcca8e84
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/algorithm
@@ -0,0 +1,7 @@
+#include "libc_header.h"
+
+namespace std {
+  int myabs(int i) {
+    return i < 0 ? -i : i;
+  }
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/module.modulemap b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/module.modulemap
new file mode 100644
index 00000000000..0eb48492a65
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/c++/include/module.modulemap
@@ -0,0 +1,3 @@
+module std {
+  module "algorithm" { header "algorithm" export * }
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/libc_header.h b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/libc_header.h
new file mode 100644
index 00000000000..47525c9db34
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/sysroot/root/usr/include/libc_header.h
@@ -0,0 +1 @@
+struct libc_struct {};
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/TestUniquePtrDbgInfoContent.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/TestUniquePtrDbgInfoContent.py
new file mode 100644
index 00000000000..c321d8022e1
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/TestUniquePtrDbgInfoContent.py
@@ -0,0 +1,33 @@
+"""
+Test std::unique_ptr functionality with a decl from debug info as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestUniquePtrDbgInfoContent(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)s->a", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(s->a = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)s->a", substrs=['(int) $2 = 5'])
+        self.expect("expr (bool)s", substrs=['(bool) $3 = true'])
+        self.expect("expr s.reset()")
+        self.expect("expr (bool)s", substrs=['(bool) $4 = false'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..73664f1c83a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr-dbg-info-content/main.cpp
@@ -0,0 +1,11 @@
+#include <memory>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::shared_ptr<Foo> s(new Foo);
+  s->a = 3;
+  return s->a; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/TestUniquePtr.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/TestUniquePtr.py
new file mode 100644
index 00000000000..295ec512327
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/TestUniquePtr.py
@@ -0,0 +1,33 @@
+"""
+Test basic std::unique_ptr functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestUniquePtr(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)*s", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(*s = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)*s", substrs=['(int) $2 = 5'])
+        self.expect("expr (bool)s", substrs=['(bool) $3 = true'])
+        self.expect("expr s.reset()")
+        self.expect("expr (bool)s", substrs=['(bool) $4 = false'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/main.cpp
new file mode 100644
index 00000000000..cb81754087f
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/unique_ptr/main.cpp
@@ -0,0 +1,7 @@
+#include <memory>
+
+int main(int argc, char **argv) {
+  std::shared_ptr<int> s(new int);
+  *s = 3;
+  return *s; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/TestBasicVector.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/TestBasicVector.py
new file mode 100644
index 00000000000..deaf8f0cb75
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/TestBasicVector.py
@@ -0,0 +1,57 @@
+"""
+Test basic std::vector functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestBasicVector(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front()", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a[1]", substrs=['(int) $2 = 1'])
+        self.expect("expr (int)a.back()", substrs=['(int) $3 = 2'])
+
+        self.expect("expr std::sort(a.begin(), a.end())")
+        self.expect("expr (int)a.front()", substrs=['(int) $4 = 1'])
+        self.expect("expr (int)a[1]", substrs=['(int) $5 = 2'])
+        self.expect("expr (int)a.back()", substrs=['(int) $6 = 3'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front()", substrs=['(int) $7 = 3'])
+        self.expect("expr (int)a[1]", substrs=['(int) $8 = 2'])
+        self.expect("expr (int)a.back()", substrs=['(int) $9 = 1'])
+
+        self.expect("expr (int)(*a.begin())", substrs=['(int) $10 = 3'])
+        self.expect("expr (int)(*a.rbegin())", substrs=['(int) $11 = 1'])
+
+        self.expect("expr a.pop_back()")
+        self.expect("expr (int)a.back()", substrs=['(int) $12 = 2'])
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $13 = 2'])
+
+        self.expect("expr (int)a.at(0)", substrs=['(int) $14 = 3'])
+
+        self.expect("expr a.push_back(4)")
+        self.expect("expr (int)a.back()", substrs=['(int) $15 = 4'])
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $16 = 3'])
+
+        self.expect("expr a.emplace_back(5)")
+        self.expect("expr (int)a.back()", substrs=['(int) $17 = 5'])
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $18 = 4'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/main.cpp
new file mode 100644
index 00000000000..edf130d4748
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-basic/main.cpp
@@ -0,0 +1,6 @@
+#include <vector>
+
+int main(int argc, char **argv) {
+  std::vector<int> a = {3, 1, 2};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/TestBoolVector.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/TestBoolVector.py
new file mode 100644
index 00000000000..0ab52695faf
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/TestBoolVector.py
@@ -0,0 +1,34 @@
+"""
+Test basic std::vector<bool> functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestBoolVector(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 4'])
+        self.expect("expr (bool)a.front()", substrs=['(bool) $1 = false'])
+        self.expect("expr (bool)a[1]", substrs=['(bool) $2 = true'])
+        self.expect("expr (bool)a.back()", substrs=['(bool) $3 = true'])
+
+        self.expect("expr (bool)(*a.begin())", substrs=['(bool) $4 = false'])
+        self.expect("expr (bool)(*a.rbegin())", substrs=['(bool) $5 = true'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/main.cpp
new file mode 100644
index 00000000000..9554401cf50
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-bool/main.cpp
@@ -0,0 +1,6 @@
+#include <vector>
+
+int main(int argc, char **argv) {
+  std::vector<bool> a = {0, 1, 0, 1};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVector.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVector.py
new file mode 100644
index 00000000000..c89265f2cd3
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVector.py
@@ -0,0 +1,47 @@
+"""
+Test basic std::vector functionality but with a declaration from
+the debug info (the Foo struct) as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestDbgInfoContentVector(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 3'])
+        self.expect("expr (int)a.front().a", substrs=['(int) $1 = 3'])
+        self.expect("expr (int)a[1].a", substrs=['(int) $2 = 1'])
+        self.expect("expr (int)a.back().a", substrs=['(int) $3 = 2'])
+
+        self.expect("expr std::reverse(a.begin(), a.end())")
+        self.expect("expr (int)a.front().a", substrs=['(int) $4 = 2'])
+
+        self.expect("expr (int)(a.begin()->a)", substrs=['(int) $5 = 2'])
+        self.expect("expr (int)(a.rbegin()->a)", substrs=['(int) $6 = 3'])
+
+        self.expect("expr a.pop_back()")
+        self.expect("expr (int)a.back().a", substrs=['(int) $7 = 1'])
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $8 = 2'])
+
+        self.expect("expr (int)a.at(0).a", substrs=['(int) $9 = 2'])
+
+        self.expect("expr a.push_back({4})")
+        self.expect("expr (int)a.back().a", substrs=['(int) $10 = 4'])
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $11 = 3'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..24c3fec75d2
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-dbg-info-content/main.cpp
@@ -0,0 +1,10 @@
+#include <vector>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::vector<Foo> a = {{3}, {1}, {2}};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/TestVectorOfVectors.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/TestVectorOfVectors.py
new file mode 100644
index 00000000000..2b82e1a039a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/TestVectorOfVectors.py
@@ -0,0 +1,30 @@
+"""
+Test std::vector functionality when it's contents are vectors.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestVectorOfVectors(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (size_t)a.size()", substrs=['(size_t) $0 = 2'])
+        self.expect("expr (int)a.front().front()", substrs=['(int) $1 = 1'])
+        self.expect("expr (int)a[1][1]", substrs=['(int) $2 = 2'])
+        self.expect("expr (int)a.back().at(0)", substrs=['(int) $3 = 3'])
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/main.cpp
new file mode 100644
index 00000000000..b5ada909e43
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/vector-of-vectors/main.cpp
@@ -0,0 +1,6 @@
+#include <vector>
+
+int main(int argc, char **argv) {
+  std::vector<std::vector<int> > a = {{1, 2, 3}, {3, 2, 1}};
+  return 0; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/TestDbgInfoContentWeakPtr.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/TestDbgInfoContentWeakPtr.py
new file mode 100644
index 00000000000..0acd54e803c
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/TestDbgInfoContentWeakPtr.py
@@ -0,0 +1,33 @@
+"""
+Test std::weak_ptr functionality with a decl from debug info as content.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestDbgInfoContentWeakPtr(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)w.lock()->a", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(w.lock()->a = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)w.lock()->a", substrs=['(int) $2 = 5'])
+        self.expect("expr w.use_count()", substrs=['(long) $3 = 1'])
+        self.expect("expr w.reset()")
+        self.expect("expr w.use_count()", substrs=['(long) $4 = 0'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/main.cpp
new file mode 100644
index 00000000000..d2c5a6258a5
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr-dbg-info-content/main.cpp
@@ -0,0 +1,12 @@
+#include <memory>
+
+struct Foo {
+  int a;
+};
+
+int main(int argc, char **argv) {
+  std::shared_ptr<Foo> s(new Foo);
+  s->a = 3;
+  std::weak_ptr<Foo> w = s;
+  return s->a; // Set break point at this line.
+}
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/Makefile b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/Makefile
new file mode 100644
index 00000000000..01718d86aa7
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+USE_LIBCPP := 1
+CXXFLAGS += $(MANDATORY_CXXMODULE_BUILD_CFLAGS)
+CXX_SOURCES := main.cpp
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/TestWeakPtr.py b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/TestWeakPtr.py
new file mode 100644
index 00000000000..6b8b9ceb7aa
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/TestWeakPtr.py
@@ -0,0 +1,33 @@
+"""
+Test basic std::weak_ptr functionality.
+"""
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+class TestSharedPtr(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    # FIXME: This should work on more setups, so remove these
+    # skipIf's in the future.
+    @add_test_categories(["libc++"])
+    @skipIf(compiler=no_match("clang"))
+    @skipIf(oslist=no_match(["linux"]))
+    @skipIf(debug_info=no_match(["dwarf"]))
+    def test(self):
+        self.build()
+
+        lldbutil.run_to_source_breakpoint(self,
+            "// Set break point at this line.", lldb.SBFileSpec("main.cpp"))
+
+        self.runCmd("settings set target.import-std-module true")
+
+        self.expect("expr (int)*w.lock()", substrs=['(int) $0 = 3'])
+        self.expect("expr (int)(*w.lock() = 5)", substrs=['(int) $1 = 5'])
+        self.expect("expr (int)*w.lock()", substrs=['(int) $2 = 5'])
+        self.expect("expr w.use_count()", substrs=['(long) $3 = 1'])
+        self.expect("expr w.reset()")
+        self.expect("expr w.use_count()", substrs=['(long) $4 = 0'])
+
diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/main.cpp b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/main.cpp
new file mode 100644
index 00000000000..13479eb9496
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/import-std-module/weak_ptr/main.cpp
@@ -0,0 +1,8 @@
+#include <memory>
+
+int main(int argc, char **argv) {
+  std::shared_ptr<int> s(new int);
+  *s = 3;
+  std::weak_ptr<int> w = s;
+  return *s; // Set break point at this line.
+}