memcheck/tests/manuel3.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 int foo, bar;
   4 #define CBAR do { __asm__ __volatile__("":::"cc","memory"); } while (0)
   5 int* gcc_cant_inline_me ( int );
   6 int main ()
   7 {
   8   int *x, y;
   9
  10   x = (int *) malloc (sizeof (int));
  11
  12   y = *x == 173;
  13
  14   if (gcc_cant_inline_me(y) == &foo) { CBAR; } else { CBAR; }
  15
  16   return 0;
  17 }
  18
  19 /* must be AFTER main */
  20 __attribute__((noinline)) int* gcc_cant_inline_me ( int n )
  21 {
  22    if (n == 1)
  23       return &foo; /* foo! */
  24    else
  25       return &bar; /* bar! */
  26 }
  27
  28