Disallow pointers to const in __sync_fetch_and_xxx.
Diagnoses code like:
void f(const int *ptr) {
__sync_fetch_and_add(ptr, 1);
}
which matches the behavior of GCC and ICC.
llvm-svn: 331598
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index b52ff97..8cc8330 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -3445,6 +3445,12 @@
return ExprError();
}
+ if (ValType.isConstQualified()) {
+ Diag(DRE->getLocStart(), diag::err_atomic_builtin_cannot_be_const)
+ << FirstArg->getType() << FirstArg->getSourceRange();
+ return ExprError();
+ }
+
switch (ValType.getObjCLifetime()) {
case Qualifiers::OCL_None:
case Qualifiers::OCL_ExplicitNone: