gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-11.c

   1 /* PR tree-optimization/86853 - sprintf optimization for wide strings
   2    doesn't account for conversion failureâ€‹
   3    Exercise wide character handling in an EBCDIC execution charset.
   4    { dg-do compile }
   5    { dg-require-iconv "IBM1047" }
   6    { dg-options "-O2 -Wall -Wno-format -Wformat-overflow -fexec-charset=IBM1047 -fdump-tree-optimized" } */
   7
   8 typedef __WCHAR_TYPE__ wchar_t;
   9
  10 /* Exercise wide character constants. */
  11
  12 void test_lc_cst (void)
  13 {
  14   /* IBM1047 0x30 maps to ASCII 0x94 which neeed not be representable
  15      in the current locale (and the snprintf() call may fail).  Verify
  16      that snprintf() doesn't assume it is.  */
  17   wchar_t wc = 0x30;
  18
  19   int n = __builtin_snprintf (0, 0, "%lc", wc);
  20   if (n < 0)
  21     __builtin_abort ();
  22 }
  23
  24 void test_C_cst (void)
  25 {
  26   /* Same as above but for %C and 0x31 which maps to 0x95.  */
  27   wchar_t wc = 0x31;
  28
  29   int n = __builtin_snprintf (0, 0, "%C", wc);
  30   if (n < 0)
  31     __builtin_abort ();
  32 }
  33
  34 /* Exercise wide character values in known ranges. */
  35
  36 void test_lc_range (wchar_t wc)
  37 {
  38   if (wc < 0x40 || 0x49 < wc)
  39     wc = 0x40;
  40
  41   int n = __builtin_snprintf (0, 0, "%lc", wc);
  42   if (n < 0)
  43     __builtin_abort ();
  44 }
  45
  46 void test_C_range (wchar_t wc)
  47 {
  48   if (wc < 0x41 || 0x48 < wc)
  49     wc = 0x41;
  50
  51   int n = __builtin_snprintf (0, 0, "%C", wc);
  52   if (n < 0)
  53     __builtin_abort ();
  54 }
  55
  56 /* Exercise unknown wide character values. */
  57
  58 void test_var (wchar_t wc)
  59 {
  60   int n = __builtin_snprintf (0, 0, "%lc", wc);
  61   if (n < 0)
  62     __builtin_abort ();
  63 }
  64
  65 /* { dg-final { scan-tree-dump-times "abort" 5 "optimized" } } */