clang-1/test/Analysis/misc-ps-basic-store.m

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876 B
Mathematica
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// RUN: clang-cc -analyze -checker-cfref --analyzer-store=basic --verify -fblocks %s &&
// RUN: clang-cc -analyze -checker-cfref --analyzer-store=basic-old-cast --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 { // no-warning
__typeof (status) __in; int __i;}
)
{
.__in = (status)}
).__i))) & 0xff00) >> 8) == 1)
ret = 1;
}