src/compiler-rt/test/asan/TestCases/alloca_instruments_all_paddings.cc

   1 // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t
   2 // RUN: %clangxx_asan -O3 -mllvm -asan-instrument-allocas %s -o %t
   3 // RUN: %run %t 2>&1
   4 //
   5
   6 #include "sanitizer/asan_interface.h"
   7 #include <assert.h>
   8
   9 __attribute__((noinline)) void foo(int index, int len) {
  10   volatile char str[len] __attribute__((aligned(32)));
  11   assert(!(reinterpret_cast<long>(str) & 31L));
  12   char *q = (char *)__asan_region_is_poisoned((char *)str, 64);
  13   assert(q && ((q - str) == index));
  14 }
  15
  16 int main(int argc, char **argv) {
  17   for (int i = 1; i < 33; ++i)
  18     foo(i, i);
  19
  20   for (int i = 1; i < 33; ++i)
  21     foo(i, i);
  22
  23   return 0;
  24 }