compiler-rt/test/asan/TestCases/printf-5.c

   1 // RUN: %clang_asan -Wno-excess-initializers -O2 %s -o %t
   2 // We need replace_intrin=0 to avoid reporting errors in memcpy.
   3 // RUN: %env_asan_opts=replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
   4 // RUN: %env_asan_opts=replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
   5 // RUN: %env_asan_opts=replace_intrin=0 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
   6
   7 // FIXME: printf is not intercepted on Windows yet.
   8 // XFAIL: target={{.*windows-(msvc.*|gnu)}}
   9
  10 // FIXME: The test is flaky after build bot upgrade. #97515
  11 // UNSUPPORTED: android
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15 int main() {
  16   volatile char c = '0';
  17   volatile int x = 12;
  18   volatile float f = 1.239;
  19   volatile char s[] = "34";
  20   volatile char fmt[2] = "%c %d %f %s\n";
  21   printf((char *)fmt, c, x, f, s);
  22   return 0;
  23   // Check that format string is sanitized.
  24   // CHECK-ON: stack-buffer-overflow
  25   // CHECK-ON-NOT: 0 12 1.239 34
  26   // CHECK-OFF: 0
  27 }