gcc/testsuite/gcc.dg/Wstringop-overflow-4.c

   1 /* { dg-do compile }
   2    { dg-options "-O2 -Wstringop-overflow" } */
   3
   4 extern char* strchr (const char*, int);
   5 extern char* strcpy (char*, const char*);
   6 extern void* malloc (__SIZE_TYPE__);
   7 extern __SIZE_TYPE__ strlen (const char *);
   8 struct define_item {
   9     int len;
  10     char value[1];
  11 };
  12
  13 struct define_item * foo(char *name)
  14 {
  15   char * p;
  16   char * value;
  17   struct define_item * ptr;
  18
  19   p = strchr (name, '=');
  20   if (1 && p) {
  21       value = p+1;
  22   } else
  23     value = "1";
  24
  25   ptr = malloc(sizeof(struct define_item) + strlen(value));
  26   strcpy(ptr->value, value);  /* { dg-bogus "bytes into a region" } */
  27   return ptr;
  28 }