Fix for PR33930. Short-circuit metadata mapping when cloning a varargs thunk.
The cloning happens before all metadata nodes are resolved. Prevent the value
mapper from running into unresolved or temporary MD nodes.
Differential Revision: https://reviews.llvm.org/D39396
llvm-svn: 317047
diff --git a/clang/test/CodeGenCXX/tmp-md-nodes2.cpp b/clang/test/CodeGenCXX/tmp-md-nodes2.cpp
new file mode 100644
index 0000000..00827f5
--- /dev/null
+++ b/clang/test/CodeGenCXX/tmp-md-nodes2.cpp
@@ -0,0 +1,33 @@
+// REQUIRES: asserts
+// RUN: %clang_cc1 -O0 -triple %itanium_abi_triple -debug-info-kind=limited -S -emit-llvm %s -o - | \
+// RUN: FileCheck %s
+
+// This test simply checks that the varargs thunk is created. The failing test
+// case asserts.
+
+typedef signed char __int8_t;
+typedef int BOOL;
+class CMsgAgent;
+
+class CFs {
+public:
+ typedef enum {} CACHE_HINT;
+ virtual BOOL ReqCacheHint( CMsgAgent* p_ma, CACHE_HINT hint, ... ) ;
+};
+
+typedef struct {} _Lldiv_t;
+
+class CBdVfs {
+public:
+ virtual ~CBdVfs( ) {}
+};
+
+class CBdVfsImpl : public CBdVfs, public CFs {
+ BOOL ReqCacheHint( CMsgAgent* p_ma, CACHE_HINT hint, ... );
+};
+
+BOOL CBdVfsImpl::ReqCacheHint( CMsgAgent* p_ma, CACHE_HINT hint, ... ) {
+ return true;
+}
+
+// CHECK: define {{.*}} @_ZThn8_N10CBdVfsImpl12ReqCacheHintEP9CMsgAgentN3CFs10CACHE_HINTEz(