QualType Ty = Callback->getType();
DeclRefExpr *Call = M.makeDeclRefExpr(Callback);
- CastKind CK;
+ Expr *SubExpr;
if (Ty->isRValueReferenceType()) {
- CK = CK_LValueToRValue;
- } else {
- assert(Ty->isLValueReferenceType());
- CK = CK_FunctionToPointerDecay;
+ SubExpr = M.makeImplicitCast(
+ Call, Ty.getNonReferenceType(), CK_LValueToRValue);
+ } else if (Ty->isLValueReferenceType() &&
+ Call->getType()->isFunctionType()) {
Ty = C.getPointerType(Ty.getNonReferenceType());
+ SubExpr = M.makeImplicitCast(Call, Ty, CK_FunctionToPointerDecay);
+ } else if (Ty->isLValueReferenceType()
+ && Call->getType()->isPointerType()
+ && Call->getType()->getPointeeType()->isFunctionType()){
+ SubExpr = Call;
+ } else {
+ llvm_unreachable("Unexpected state");
}
return new (C)
- CallExpr(C, M.makeImplicitCast(Call, Ty.getNonReferenceType(), CK),
- /*args=*/CallArgs,
- /*QualType=*/C.VoidTy,
- /*ExprValueType=*/VK_RValue,
- /*SourceLocation=*/SourceLocation());
+ CallExpr(C, SubExpr, CallArgs, C.VoidTy, VK_RValue, SourceLocation());
}
static CallExpr *create_call_once_lambda_call(ASTContext &C, ASTMaker M,
std::once_flag flag;
call_once(flag, callback_taking_func, callback_with_implicit_cast);
}
+
+std::once_flag another_once_flag;
+typedef void (*my_callback_t)(int *);
+my_callback_t callback;
+int global_int;
+
+void rdar40270582() {
+ call_once(another_once_flag, callback, &global_int);
+}