blob: 940d277b924749f3568bc810c4b0fc56778ffa95 [file] [log] [blame]
// RUN: clang -analyze -checker-cfref --analyzer-store-region --verify -fblocks %s
//---------------------------------------------------------------------------
// Test case 'checkaccess_union' differs for region store and basic store.
// The basic store doesn't reason about compound literals, so the code
// below won't fire an "uninitialized value" warning.
//---------------------------------------------------------------------------
// PR 2948 (testcase; crash on VisitLValue for union types)
// http://llvm.org/bugs/show_bug.cgi?id=2948
void checkaccess_union() {
int ret = 0, status;
if (((((__extension__ (((union { // expected-warning {{ Branch condition evaluates to an uninitialized value.}}
__typeof (status) __in; int __i;}
)
{
.__in = (status)}
).__i))) & 0xff00) >> 8) == 1)
ret = 1;
}