gcc/testsuite/gcc.dg/20000807-1.c

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