compiler-rt/test/asan/TestCases/alloca_safe_access.cpp

   1 // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
   2 // RUN: %run %t 2>&1
   3 //
   4
   5 #include <assert.h>
   6 #include <stdint.h>
   7
   8 __attribute__((noinline)) void foo(int index, int len) {
   9   volatile char str[len] __attribute__((aligned(32)));
  10   assert(!(reinterpret_cast<uintptr_t>(str) & 31L));
  11   str[index] = '1';
  12 }
  13
  14 int main(int argc, char **argv) {
  15   foo(4, 5);
  16   foo(39, 40);
  17   return 0;
  18 }