[ASan] Link with libclang_rt.asan_iossim_dynamic.dylib when targeting the iOS simulator.

Add a test.

llvm-svn: 194820

2 files changed, 19 insertions, 2 deletions

diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index acd0bbd96ce..7dc73422113 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -329,8 +329,17 @@ void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
         // The ASAN runtime library requires C++.
         AddCXXStdlibLibArgs(Args, CmdArgs);
       }
-      AddLinkRuntimeLib(Args, CmdArgs,
-                        "libclang_rt.asan_osx_dynamic.dylib", true);
+      if (isTargetMacOS()) {
+        AddLinkRuntimeLib(Args, CmdArgs,
+                          "libclang_rt.asan_osx_dynamic.dylib",
+                          true);
+      } else {
+        if (isTargetIOSSimulator()) {
+          AddLinkRuntimeLib(Args, CmdArgs,
+                            "libclang_rt.asan_iossim_dynamic.dylib",
+                            true);
+        }
+      }
     }
   }
 
diff --git a/clang/test/Driver/darwin-sanitizer-ld.c b/clang/test/Driver/darwin-sanitizer-ld.c
index 14b16156614..1aef0caf9f0 100644
--- a/clang/test/Driver/darwin-sanitizer-ld.c
+++ b/clang/test/Driver/darwin-sanitizer-ld.c
@@ -9,6 +9,14 @@
 // CHECK-ASAN: libclang_rt.asan_osx_dynamic.dylib"
 
 // RUN: %clang -no-canonical-prefixes -### -target x86_64-darwin \
+// RUN:   -fsanitize=address -mios-simulator-version-min=7.0 %s -o %t.o 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-ASAN-IOSSIM %s
+
+// CHECK-ASAN-IOSSIM: "{{.*}}ld{{(.exe)?}}"
+// CHECK-ASAN-IOSSIM: stdc++
+// CHECK-ASAN-IOSSIM: libclang_rt.asan_iossim_dynamic.dylib"
+
+// RUN: %clang -no-canonical-prefixes -### -target x86_64-darwin \
 // RUN:   -fPIC -shared -fsanitize=address %s -o %t.so 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-DYN-ASAN %s