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// Tests use-after-return detection and reporting.
// RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clang_hwasan -g %s -o %t && not %env_hwasan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOSYM
// REQUIRES: stable-runtime
// Stack histories currently are not recorded on x86.
// XFAIL: x86_64
void USE(void *x) { // pretend_to_do_something(void *x)
__asm__ __volatile__("" : : "r" (x) : "memory");
}
__attribute__((noinline))
char *buggy() {
char zzz[0x1000];
char *volatile p = zzz;
return p;
}
__attribute__((noinline)) void Unrelated1() { int A[2]; USE(&A[0]); }
__attribute__((noinline)) void Unrelated2() { int BB[3]; USE(&BB[0]); }
__attribute__((noinline)) void Unrelated3() { int CCC[4]; USE(&CCC[0]); }
int main() {
char *p = buggy();
Unrelated1();
Unrelated2();
Unrelated3();
return *p;
// CHECK: READ of size 1 at
// CHECK: #0 {{.*}} in main{{.*}}stack-uar.c:[[@LINE-2]]
// CHECK: Cause: stack tag-mismatch
// CHECK: is located in stack of thread
// CHECK: Potentially referenced stack objects:
// CHECK-NEXT: zzz in buggy {{.*}}stack-uar.c:[[@LINE-20]]
// CHECK-NEXT: Memory tags around the buggy address
// NOSYM: Previously allocated frames:
// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uar.c.tmp+0x{{.*}}){{$}}
// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uar.c.tmp+0x{{.*}}){{$}}
// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uar.c.tmp+0x{{.*}}){{$}}
// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uar.c.tmp+0x{{.*}}){{$}}
// NOSYM-NEXT: Memory tags around the buggy address
// CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in main
}
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