In debugger support mode, if we have a top-level message send
expression with an unknown result type, assume that the result type is
'id'. Fixes <rdar://problem/10400663>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146622 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index 59369d6..e7e6b89 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -4674,6 +4674,15 @@
if (DiagnoseUnexpandedParameterPack(FullExpr.get()))
return ExprError();
+ // Top-level message sends default to 'id' when we're in a debugger.
+ if (getLangOptions().DebuggerSupport &&
+ FullExpr.get()->getType() == Context.UnknownAnyTy &&
+ isa<ObjCMessageExpr>(FullExpr.get())) {
+ FullExpr = forceUnknownAnyToType(FullExpr.take(), Context.getObjCIdType());
+ if (FullExpr.isInvalid())
+ return ExprError();
+ }
+
FullExpr = CheckPlaceholderExpr(FullExpr.take());
if (FullExpr.isInvalid())
return ExprError();