| // 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 |
| } |
