Warn when someone tries to pass a variable with a non-POD type to a varargs function/method/block.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62148 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index d3d3d35..2721bb8 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -1688,6 +1688,17 @@
// Promote the arguments (C99 6.5.2.2p7).
for (unsigned i = NumArgsInProto; i != NumArgs; i++) {
Expr *Arg = Args[i];
+ if (!Arg->getType()->isPODType()) {
+ int CallType = 0;
+ if (Fn->getType()->isBlockPointerType())
+ CallType = 1; // Block
+ else if (isa<MemberExpr>(Fn))
+ CallType = 2;
+
+ Diag(Arg->getLocStart(),
+ diag::warn_cannot_pass_non_pod_arg_to_vararg) <<
+ Arg->getType() << CallType;
+ }
DefaultArgumentPromotion(Arg);
Call->setArg(i, Arg);
}