Author: majnemer
Date: Tue Dec 29 16:25:14 2015
New Revision: 256589
URL: http://llvm.org/viewvc/llvm-project?rev=256589&view=rev
Log:
[MS ABI] Invent a mangling for reference temporaries
MSVC is non-conforming and doesn't have a mangling for these. Invent
our own to unblock folks using clang.
This fixes PR25795.
Modified:
cfe/trunk/lib/AST/MicrosoftMangle.cpp
cfe/trunk/test/CodeGenCXX/mangle-ms.cpp
Modified: cfe/trunk/lib/AST/MicrosoftMangle.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/MicrosoftMangle.cpp?rev=256589&r1=256588&r2=256589&view=diff
==============================================================================
--- cfe/trunk/lib/AST/MicrosoftMangle.cpp (original)
+++ cfe/trunk/lib/AST/MicrosoftMangle.cpp Tue Dec 29 16:25:14 2015
@@ -2760,12 +2760,12 @@ void MicrosoftMangleContextImpl::mangleC
mangler.mangle(D);
}
-void MicrosoftMangleContextImpl::mangleReferenceTemporary(const VarDecl *VD,
- unsigned,
- raw_ostream &) {
- unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error,
- "cannot mangle this reference temporary yet");
- getDiags().Report(VD->getLocation(), DiagID);
+void MicrosoftMangleContextImpl::mangleReferenceTemporary(
+ const VarDecl *VD, unsigned ManglingNumber, raw_ostream &Out) {
+ MicrosoftCXXNameMangler Mangler(*this, Out);
+
+ Mangler.getStream() << "\01?$RT" << ManglingNumber << '@';
+ Mangler.mangle(VD, "");
}
void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
Modified: cfe/trunk/test/CodeGenCXX/mangle-ms.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/mangle-ms.cpp?rev=256589&r1=256588&r2=256589&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/mangle-ms.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/mangle-ms.cpp Tue Dec 29 16:25:14 2015
@@ -21,6 +21,10 @@ int _c(void) {return N::anonymous + c;}
// CHECK-DAG: @"\01?_c@@YAHXZ"
// X64-DAG: @"\01?_c@@YAHXZ"
+const int &NeedsReferenceTemporary = 2;
+// CHECK-DAG: @"\01?NeedsReferenceTemporary@@3ABHB" = constant i32*
@"\01?$RT1@NeedsReferenceTemporary@@3ABHB"
+// X64-DAG: @"\01?NeedsReferenceTemporary@@3AEBHEB" = constant i32*
@"\01?$RT1@NeedsReferenceTemporary@@3AEBHEB"
+
class foo {
static const short d;
// CHECK-DAG: @"\01?d@foo@@0FB"
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