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