Emit a proper diagnostic when attempting to forward inalloca arguments
The previous assertion was relatively easy to trigger, and likely will
be easy to trigger going forward. EmitDelegateCallArg is relatively
popular.
This cleanly diagnoses PR28299 while I work on a proper solution.
llvm-svn: 348991
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 4757cd2..b2c1eba 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -3076,8 +3076,9 @@
QualType type = param->getType();
- assert(!isInAllocaArgument(CGM.getCXXABI(), type) &&
- "cannot emit delegate call arguments for inalloca arguments!");
+ if (isInAllocaArgument(CGM.getCXXABI(), type)) {
+ CGM.ErrorUnsupported(param, "forwarded non-trivially copyable parameter");
+ }
// GetAddrOfLocalVar returns a pointer-to-pointer for references,
// but the argument needs to be the original pointer.