28 lines
1.0 KiB
C
28 lines
1.0 KiB
C
|
// RUN: %clang_analyze_cc1 -w -analyzer-checker=core,debug.ExprInspection \
|
||
|
|
// RUN: -analyzer-output=text -verify %s
|
||
|
|
|
||
|
|
int OSAtomicCompareAndSwapPtrBarrier(*, *, **);
|
||
|
|
int OSAtomicCompareAndSwapPtrBarrier() {
|
||
|
|
// There is some body in the actual header,
|
||
|
|
// but we should trust our BodyFarm instead.
|
||
|
|
}
|
||
|
|
|
||
|
|
int *invalidSLocOnRedecl() {
|
||
|
|
// Was crashing when trying to throw a report about returning an uninitialized
|
||
|
|
// value to the caller. FIXME: We should probably still throw that report,
|
||
|
|
// something like "The "compare" part of CompareAndSwap depends on an
|
||
|
|
// undefined value".
|
||
|
|
int *b;
|
||
|
|
OSAtomicCompareAndSwapPtrBarrier(0, 0, &b); // no-crash
|
||
|
|
return b;
|
||
|
|
}
|
||
|
|
|
||
|
|
void testThatItActuallyWorks() {
|
||
|
|
void *x = 0;
|
||
|
|
int res = OSAtomicCompareAndSwapPtrBarrier(0, &x, &x);
|
||
|
|
clang_analyzer_eval(res); // expected-warning{{TRUE}}
|
||
|
|
// expected-note@-1{{TRUE}}
|
||
|
|
clang_analyzer_eval(x == &x); // expected-warning{{TRUE}}
|
||
|
|
// expected-note@-1{{TRUE}}
|
||
|
|
}
|