compiler-rt/test/safestack/buffer-copy-vla.c

   1 // RUN: %clang_safestack %s -o %t
   2 // RUN: %run %t
   3
   4 #include "utils.h"
   5
   6 // Test that loads/stores work correctly for VLAs on the unsafe stack.
   7
   8 int main(int argc, char **argv)
   9 {
  10   int i = 128;
  11   break_optimization(&i);
  12   char buffer[i];
  13
  14   // check that we can write to a buffer
  15   for (i = 0; argv[0][i] && i < sizeof (buffer) - 1; ++i)
  16     buffer[i] = argv[0][i];
  17   buffer[i] = '\0';
  18
  19   break_optimization(buffer);
  20
  21   // check that we can read from a buffer
  22   for (i = 0; argv[0][i] && i < sizeof (buffer) - 1; ++i)
  23     if (buffer[i] != argv[0][i])
  24       return 1;
  25   return 0;
  26 }