gcc/testsuite/gcc.c-torture/execute/string-opt-18.c

   1 /* Copyright (C) 2003  Free Software Foundation.
   2
   3    Test equal pointer optimizations don't break anything.
   4
   5    Written by Roger Sayle, July 14, 2003.  */
   6
   7 extern void abort ();
   8 typedef __SIZE_TYPE__ size_t;
   9
  10 extern void *memcpy(void*, const void*, size_t);
  11 extern void *mempcpy(void*, const void*, size_t);
  12 extern void *memmove(void*, const void*, size_t);
  13 extern char *strcpy(char*, const char*);
  14 extern int memcmp(const void*, const void*, size_t);
  15 extern int strcmp(const char*, const char*);
  16 extern int strncmp(const char*, const char*, size_t);
  17
  18
  19 void test1 (void *ptr)
  20 {
  21   if (memcpy(ptr,ptr,8) != ptr)
  22     abort ();
  23 }
  24
  25 void test2 (char *ptr)
  26 {
  27   if (mempcpy(ptr,ptr,8) != ptr+8)
  28     abort ();
  29 }
  30
  31 void test3 (void *ptr)
  32 {
  33   if (memmove(ptr,ptr,8) != ptr)
  34     abort ();
  35 }
  36
  37 void test4 (char *ptr)
  38 {
  39   if (strcpy(ptr,ptr) != ptr)
  40     abort ();
  41 }
  42
  43 void test5 (void *ptr)
  44 {
  45   if (memcmp(ptr,ptr,8) != 0)
  46     abort ();
  47 }
  48
  49 void test6 (const char *ptr)
  50 {
  51   if (strcmp(ptr,ptr) != 0)
  52     abort ();
  53 }
  54
  55 void test7 (const char *ptr)
  56 {
  57   if (strncmp(ptr,ptr,8) != 0)
  58     abort ();
  59 }
  60
  61
  62 int main ()
  63 {
  64   char buf[10];
  65
  66   test1 (buf);
  67   test2 (buf);
  68   test3 (buf);
  69   test4 (buf);
  70   test5 (buf);
  71   test6 (buf);
  72   test7 (buf);
  73
  74   return 0;
  75 }
  76