gcc/testsuite/gcc.dg/strlenopt-39.c

   1 /* PR tree-optimization/83444
   2    { dg-do compile { target i?86-*-* x86_64-*-* } }
   3    { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 #include "strlenopt.h"
   6
   7 #define STR "1234567"
   8
   9 const char str[] = STR;
  10
  11 char dst[10];
  12
  13 void copy_from_global_str (void)
  14 {
  15   strcpy (dst, str);
  16
  17   if (strlen (dst) != sizeof str - 1)
  18     abort ();
  19 }
  20
  21 void copy_from_local_str (void)
  22 {
  23   const char s[] = STR;
  24
  25   strcpy (dst, s);
  26
  27   if (strlen (dst) != sizeof s - 1)
  28     abort ();
  29 }
  30
  31 void copy_from_local_memstr (void)
  32 {
  33   struct {
  34     char s[sizeof STR];
  35   } x = { STR };
  36
  37   strcpy (dst, x.s);
  38
  39   if (strlen (dst) != sizeof x.s - 1)
  40     abort ();
  41 }
  42
  43 void copy_to_local_str (void)
  44 {
  45   char d[sizeof STR];
  46
  47   strcpy (d, str);
  48
  49   if (strlen (d) != sizeof str - 1)
  50     abort ();
  51 }
  52
  53 void copy_to_local_memstr (void)
  54 {
  55   struct {
  56     char d[sizeof STR];
  57   } x;
  58
  59   strcpy (x.d, str);
  60
  61   if (strlen (x.d) != sizeof str- 1)
  62     abort ();
  63 }
  64
  65 /* Verify that all calls to strlen have been eliminated.
  66   { dg-final { scan-tree-dump-not "(abort|strlen) \\(\\)" "optimized" } } */