1 files changed, 53 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/tmp-md-nodes3.cpp b/clang/test/CodeGenCXX/tmp-md-nodes3.cpp
new file mode 100644
index 0000000..4656f64
--- /dev/null
+++ b/clang/test/CodeGenCXX/tmp-md-nodes3.cpp
@@ -0,0 +1,53 @@
+// REQUIRES: asserts, riscv-registered-target
+// Should trigger GenerateVarArgsThunk.
+// RUN: %clang_cc1 -O0 -triple riscv64-linux-gnu -debug-info-kind=limited -emit-llvm %s -o - | \
+// RUN: FileCheck %s
+
+// RUN: %clang_cc1 -O0 -triple riscv64-linux-gnu -debug-info-kind=limited -emit-obj %s -o - | \
+// RUN: llvm-dwarfdump --verify -
+
+// This test checks that clang doesn't crash when creating a varargs thunk
+// by cloning a function which DILocalVariable types are unresolved at cloning
+// time.
+// In such case, as a workaround, instead of cloning unresolved types for
+// the thunk, clang produces thunk DILocalVariables that refer to local
+// types from the original DISubprogram.
+
+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, ... ) {
+  // Complete enum with no defintion. Clang allows to declare variables of
+  // such type.
+  enum class E : int;
+  E enum_var;
+  // Structure has forward declaration. DIDerivedType which is a pointer
+  // to it is unresolved during debug info generation for the function.
+  struct LocalStruct;
+  LocalStruct *struct_var;
+
+  struct GlobalStruct {};
+
+  return true;
+}
+
+// Check that thunk is emitted.
+// CHECK: define {{.*}} @_ZThn{{[48]}}_N10CBdVfsImpl12ReqCacheHintEP9CMsgAgentN3CFs10CACHE_HINTEz(