gcc/testsuite/gcc.c-torture/execute/builtins/sprintf.c

   1 /* Copyright (C) 2003  Free Software Foundation.
   2
   3    Test sprintf optimizations don't break anything and return the
   4    correct results.
   5
   6    Written by Roger Sayle, June 22, 2003.  */
   7
   8 static char buffer[32];
   9
  10 extern void abort ();
  11 typedef __SIZE_TYPE__ size_t;
  12 extern int sprintf(char*, const char*, ...);
  13 extern void *memset(void*, int, size_t);
  14 extern int memcmp(const void*, const void*, size_t);
  15
  16 void test1()
  17 {
  18   sprintf(buffer,"foo");
  19 }
  20
  21 int test2()
  22 {
  23   return sprintf(buffer,"foo");
  24 }
  25
  26 void test3()
  27 {
  28   sprintf(buffer,"%s","bar");
  29 }
  30
  31 int test4()
  32 {
  33   return sprintf(buffer,"%s","bar");
  34 }
  35
  36 void test5(char *ptr)
  37 {
  38   sprintf(buffer,"%s",ptr);
  39 }
  40
  41
  42 void
  43 main_test (void)
  44 {
  45   memset (buffer, 'A', 32);
  46   test1 ();
  47   if (memcmp(buffer, "foo", 4) || buffer[4] != 'A')
  48     abort ();
  49
  50   memset (buffer, 'A', 32);
  51   if (test2 () != 3)
  52     abort ();
  53   if (memcmp(buffer, "foo", 4) || buffer[4] != 'A')
  54     abort ();
  55
  56   memset (buffer, 'A', 32);
  57   test3 ();
  58   if (memcmp(buffer, "bar", 4) || buffer[4] != 'A')
  59     abort ();
  60
  61   memset (buffer, 'A', 32);
  62   if (test4 () != 3)
  63     abort ();
  64   if (memcmp(buffer, "bar", 4) || buffer[4] != 'A')
  65     abort ();
  66
  67   memset (buffer, 'A', 32);
  68   test5 ("barf");
  69   if (memcmp(buffer, "barf", 5) || buffer[5] != 'A')
  70     abort ();
  71 }