| 1 | // RUN: %clang_asan -O2 %s -o %t |
|---|
| 2 | // RUN: %env_asan_opts=check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s |
|---|
| 3 | // RUN: not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s |
|---|
| 4 | |
|---|
| 5 | // FIXME: sprintf is not intercepted on Windows yet. But this test can |
|---|
| 6 | // pass if sprintf calls memmove, which is intercepted, so we can't XFAIL it. |
|---|
| 7 | // UNSUPPORTED: target={{.*windows-msvc.*}} |
|---|
| 8 | |
|---|
| 9 | #include <stdio.h> |
|---|
| 10 | int main() { |
|---|
| 11 | volatile char c = '0'; |
|---|
| 12 | volatile int x = 12; |
|---|
| 13 | volatile float f = 1.239; |
|---|
| 14 | volatile char s[] = "34" ; |
|---|
| 15 | volatile char buf[2]; |
|---|
| 16 | fputs(s: "before sprintf\n" , stderr); |
|---|
| 17 | sprintf(s: (char *)buf, format: "%c %d %.3f %s\n" , c, x, f, s); |
|---|
| 18 | fputs(s: "after sprintf" , stderr); |
|---|
| 19 | fputs(s: (const char *)buf, stderr); |
|---|
| 20 | return 0; |
|---|
| 21 | // Check that size of output buffer is sanitized. |
|---|
| 22 | // CHECK-ON: before sprintf |
|---|
| 23 | // CHECK-ON-NOT: after sprintf |
|---|
| 24 | // CHECK-ON: stack-buffer-overflow |
|---|
| 25 | // CHECK-ON-NOT: 0 12 1.239 34 |
|---|
| 26 | } |
|---|
| 27 | |
|---|
