commit b217c1b9d2225521f4021984ad5a424784fa22bb
author Anders Carlsson <andersca@mac.com> Tue Oct 06 21:58:01 2009 +0000
committer Anders Carlsson <andersca@mac.com> Tue Oct 06 21:58:01 2009 +0000
tree 3d6a37064022b31805f51a86739696941dd658b0
parent 6e461bf75359b4eb2ae59058741c3c8ba898d60f

When mangling names, always use the canonical decl. Fixes PR5144.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83420 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/Mangle.cpp

diff --git a/lib/CodeGen/Mangle.cpp b/lib/CodeGen/Mangle.cpp
index 7555ae5..702edf0 100644
--- a/lib/CodeGen/Mangle.cpp
+++ b/lib/CodeGen/Mangle.cpp
@@ -1303,7 +1303,7 @@
                                    "Mangling declaration");
     
     CXXNameMangler Mangler(Context, os);
-    if (!Mangler.mangle(D))
+    if (!Mangler.mangle(cast<NamedDecl>(D->getCanonicalDecl())))
       return false;
 
     os.flush();

test/CodeGenCXX/mangle.cpp

diff --git a/test/CodeGenCXX/mangle.cpp b/test/CodeGenCXX/mangle.cpp
index 86f5fb0..a881a71 100644
--- a/test/CodeGenCXX/mangle.cpp
+++ b/test/CodeGenCXX/mangle.cpp
@@ -198,3 +198,12 @@
 template void ft7<int>();
 // CHECK: @_Z3ft7IPvEN11__enable_ifIXsr11__is_scalarIT_E7__valueEvE6__typeEv
 template void ft7<void*>();
+
+// PR5144
+extern "C" {
+void extern_f(void);
+};
+
+// CHECK: @extern_f
+void extern_f(void) { }
+