[clang][bytecode] Check builtin carryops for non-block out pointers (llvm#165512)

Fixes llvm#165372

Author: tbaederr

clang/lib/AST/ByteCode/InterpBuiltin.cpp

@@ -859,7 +859,7 @@ static bool interp__builtin_carryop(InterpState &S, CodePtr OpPC,
   APSInt RHS = popToAPSInt(S.Stk, RHST);
   APSInt LHS = popToAPSInt(S.Stk, LHST);
 
-  if (CarryOutPtr.isDummy())
+  if (CarryOutPtr.isDummy() || !CarryOutPtr.isBlockPointer())
     return false;
 
   APSInt CarryOut;

clang/test/AST/ByteCode/builtin-functions.cpp

@@ -1856,7 +1856,8 @@ namespace InitParam {
 
 #endif
 
-namespace SAddOverflowInt {
+namespace NonBlockPointerStore {
   int a;
   void foo(void) { a *= __builtin_sadd_overflow(1, 2, 0); }
+  void foo2(void) { a *= __builtin_addc(1, 2, 0, 0); }
 }