| // RUN: %clangxx_asan -O1 %s -o %t |
| // RUN: not %run %t 0 2>&1 | FileCheck %s --check-prefix=CHECK0 |
| // RUN: not %run %t 1 2>&1 | FileCheck %s --check-prefix=CHECK1 |
| // RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK2 |
| // RUN: not %run %t 3 2>&1 | FileCheck %s --check-prefix=CHECK3 |
| |
| #define NOINLINE __attribute__((noinline)) |
| inline void break_optimization(void *arg) { |
| __asm__ __volatile__("" : : "r" (arg) : "memory"); |
| } |
| |
| NOINLINE static void Frame0(int frame, char *a, char *b, char *c) { |
| char s[4] = {0}; |
| char *d = s; |
| break_optimization(&d); |
| switch (frame) { |
| case 3: a[5]++; break; |
| case 2: b[5]++; break; |
| case 1: c[5]++; break; |
| case 0: d[5]++; break; |
| } |
| } |
| NOINLINE static void Frame1(int frame, char *a, char *b) { |
| char c[4] = {0}; Frame0(frame, a, b, c); |
| break_optimization(0); |
| } |
| NOINLINE static void Frame2(int frame, char *a) { |
| char b[4] = {0}; Frame1(frame, a, b); |
| break_optimization(0); |
| } |
| NOINLINE static void Frame3(int frame) { |
| char a[4] = {0}; Frame2(frame, a); |
| break_optimization(0); |
| } |
| |
| int main(int argc, char **argv) { |
| if (argc != 2) return 1; |
| Frame3(argv[1][0] - '0'); |
| } |
| |
| // CHECK0: AddressSanitizer: stack-buffer-overflow |
| // CHECK0: #0{{.*}}Frame0 |
| // CHECK0: #1{{.*}}Frame1 |
| // CHECK0: #2{{.*}}Frame2 |
| // CHECK0: #3{{.*}}Frame3 |
| // CHECK0: is located in stack of thread T0 at offset |
| // CHECK0-NEXT: #0{{.*}}Frame0 |
| // |
| // CHECK1: AddressSanitizer: stack-buffer-overflow |
| // CHECK1: is located in stack of thread T0 at offset |
| // CHECK1-NEXT: #0{{.*}}Frame1 |
| // |
| // CHECK2: AddressSanitizer: stack-buffer-overflow |
| // CHECK2: is located in stack of thread T0 at offset |
| // CHECK2-NEXT: #0{{.*}}Frame2 |
| // |
| // CHECK3: AddressSanitizer: stack-buffer-overflow |
| // CHECK3: is located in stack of thread T0 at offset |
| // CHECK3-NEXT: #0{{.*}}Frame3 |
