| // Tests use-after-scope detection and reporting. |
| // RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -g %s -o %t && not %run %t 2>&1 | FileCheck %s |
| // RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -g %s -o %t && not %env_hwasan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOSYM |
| |
| // RUN: %clang_hwasan -mllvm -hwasan-use-after-scope=false -g %s -o %t && %run %t 2>&1 |
| // Use after scope is turned off by default. |
| // RUN: %clang_hwasan -g %s -o %t && %run %t 2>&1 |
| |
| // RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -g %s -o %t && not %run %t 2>&1 | FileCheck %s |
| |
| // Run the same test as above, but using the __hwasan_add_frame_record libcall. |
| // The output should be the exact same. |
| // RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -mllvm -hwasan-record-stack-history=libcall -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: target=x86_64{{.*}} |
| |
| void USE(void *x) { // pretend_to_do_something(void *x) |
| __asm__ __volatile__("" |
| : |
| : "r"(x) |
| : "memory"); |
| } |
| |
| __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]); |
| } |
| |
| __attribute__((noinline)) char buggy() { |
| char *volatile p; |
| { |
| char zzz[0x1000] = {}; |
| p = zzz; |
| } |
| return *p; |
| } |
| |
| int main() { |
| Unrelated1(); |
| Unrelated2(); |
| Unrelated3(); |
| char p = buggy(); |
| return p; |
| // CHECK: READ of size 1 at |
| // CHECK: #0 {{.*}} in buggy{{.*}}stack-uas.c:[[@LINE-10]] |
| // CHECK: Cause: stack tag-mismatch |
| // CHECK: is located in stack of thread |
| // CHECK: Potentially referenced stack objects: |
| // CHECK-NEXT: zzz in buggy {{.*}}stack-uas.c:[[@LINE-17]] |
| // CHECK-NEXT: Memory tags around the buggy address |
| |
| // NOSYM: Previously allocated frames: |
| // NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}} |
| // NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}} |
| // NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}} |
| // NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}} |
| // NOSYM-NEXT: Memory tags around the buggy address |
| |
| // CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in buggy |
| } |