gcc/testsuite/gcc.target/i386/20000807-1.c

   1 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   2 /* { dg-require-effective-target fpic } */
   3 /* { dg-options "-Os -fpic" } */
   4
   5 #include <string.h>
   6
   7 typedef struct
   8 {
   9   char *a;
  10   char *b;
  11 } *foo;
  12
  13 void
  14 bar (foo x)
  15 {
  16   char *c = x->b;
  17   char *d = (void *)0;
  18   unsigned int e = 0, f = 0, g;
  19   while (*c != ':')
  20     if (*c == '%')
  21       {
  22         ++c;
  23         switch (*c++)
  24           {
  25           case 'N':
  26             g = strlen (x->a);
  27             if (e + g >= f) {
  28                 char *h = d;
  29                 f += 256 + g;
  30                 d = (char *) __builtin_alloca (f);
  31                 memcpy (d, h, e);
  32             };
  33             memcpy (&d[e], x->a, g);
  34             e += g;
  35             break;
  36           }
  37       }
  38 }