Fix completion for functions in anonymous namespaces

I was going through some of the old bugs and came across PR21069 which I
was able to reproduce. The issue is that we match the regex `^foo`
against the `DW_AT_name` in the DWARF, which for our anonymous function
is indeed `foo`. However, when we get the function name from the symbol
context, the result is `(anonymous namespace)::foo()`. This throws off
completions, which assumes that it's appending to whatever is already
present on the input, resulting in a bogus
`b fooonymous\ namespace)::foo()`.

Bug report: https://llvm.org/PR21069

Differential revision: https://reviews.llvm.org/D65498

llvm-svn: 367455

2 files changed, 6 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py b/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
index c073425a93f..23d3d999ca2 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
@@ -297,3 +297,6 @@ class CommandLineCompletionTestCase(TestBase):
         self.complete_from_to('breakpoint set -n Fo',
                               'breakpoint set -n Foo::Bar(int,\\ int)',
                               turn_off_re_match=True)
+        # No completion for Qu because the candidate is
+        # (anonymous namespace)::Quux().
+        self.complete_from_to('breakpoint set -n Qu', '')
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp b/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
index 0814bb9cc0a..eba81dc4c54 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
@@ -7,6 +7,8 @@ public:
     }
 };
 
+namespace { int Quux (void) { return 0; } }
+
 struct Container { int MemberVar; };
 
 int main()
@@ -17,5 +19,6 @@ int main()
 
     Container container;
     Container *ptr_container = &container;
+    int q = Quux();
     return container.MemberVar = 3; // Break here
 }