gcc/testsuite/gcc.dg/format/ms_c99-printf-1.c

   1 /* Test for printf formats.  Formats using C99 features, including cases
   2    where C99 specifies some aspect of the format to be ignored or where
   3    the behavior is undefined.
   4 */
   5 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   6 /* { dg-do compile { target { *-*-mingw* } } } */
   7 /* { dg-options "-std=iso9899:1999 -pedantic -Wformat" } */
   8
   9 #define USE_SYSTEM_FORMATS
  10 #include "format.h"
  11
  12 void
  13 foo (int i, unsigned int u, double d, char *s, void *p, int *n,
  14      long double ld, wint_t lc, wchar_t *ls, long long int ll,
  15      unsigned long long int ull, signed char *ss, unsigned char *us,
  16      long long int *lln, intmax_t j, uintmax_t uj, intmax_t *jn,
  17      size_t z, signed_size_t sz, signed_size_t *zn,
  18      ptrdiff_t t, ptrdiff_t *tn)
  19 {
  20   /* See ISO/IEC 9899:1999 (E) subclause 7.19.6.1 (pages 273-281).
  21      We do not repeat here most of the checks for correct C90 formats
  22      or completely broken formats.
  23   */
  24   /* Valid and invalid %h, %hh, %l, %j, %z, %t, %L constructions.  */
  25   printf ("%hf", d); /* { dg-warning "length" "bad use of %h" } */
  26   printf ("%hF", d); /* { dg-warning "unknown|format" "bad use of %hF" } */
  27   printf ("%he", d); /* { dg-warning "length" "bad use of %h" } */
  28   printf ("%hE", d); /* { dg-warning "length" "bad use of %h" } */
  29   printf ("%hg", d); /* { dg-warning "length" "bad use of %h" } */
  30   printf ("%hG", d); /* { dg-warning "length" "bad use of %h" } */
  31   printf ("%ha", d); /* { dg-warning "unknown|format" "bad use of %ha" } */
  32   printf ("%hA", d); /* { dg-warning "unknown|format" "bad use of %hA" } */
  33   printf ("%hc", i);
  34   printf ("%hs", (short *)s);
  35   printf ("%hp", p); /* { dg-warning "length" "bad use of %h" } */
  36   printf ("%lc", lc);
  37   printf ("%ls", ls);
  38   printf ("%lp", p); /* { dg-warning "length|C" "bad use of %l" } */
  39   /* Valid uses of each bare conversion.  */
  40   printf ("%d%i%o%u%x%X%f%e%E%g%G%c%s%p%n%%", i, i, u, u, u, u,
  41           d, d, d, d, d, i, s, p, n);
  42   /* Uses of the - flag (valid on all non-%, non-n conversions).  */
  43   printf ("%-d%-i%-o%-u%-x%-X%-f%-e%-E%-g%-G%-c%-s%-p", i, i,
  44           u, u, u, u, d, d, d, d, d, i, s, p);
  45   printf ("%-n", n); /* { dg-warning "flag" "bad use of %-n" } */
  46   /* Uses of the + flag (valid on signed conversions only).  */
  47   printf ("%+d%+i%+f%+e%+E%+g%+G\n", i, i, d, d, d, d, d);
  48   printf ("%+o", u); /* { dg-warning "flag" "bad use of + flag" } */
  49   printf ("%+u", u); /* { dg-warning "flag" "bad use of + flag" } */
  50   printf ("%+x", u); /* { dg-warning "flag" "bad use of + flag" } */
  51   printf ("%+X", u); /* { dg-warning "flag" "bad use of + flag" } */
  52   printf ("%+c", i); /* { dg-warning "flag" "bad use of + flag" } */
  53   printf ("%+s", s); /* { dg-warning "flag" "bad use of + flag" } */
  54   printf ("%+p", p); /* { dg-warning "flag" "bad use of + flag" } */
  55   printf ("%+n", n); /* { dg-warning "flag" "bad use of + flag" } */
  56   /* Uses of the space flag (valid on signed conversions only, and ignored
  57      with +).
  58   */
  59   printf ("% +d", i); /* { dg-warning "use of both|ignored" "use of space and + flags" } */
  60   printf ("%+ d", i); /* { dg-warning "use of both|ignored" "use of space and + flags" } */
  61   printf ("% d% i% f% e% E% g% G\n", i, i, d, d, d, d, d);
  62   printf ("% o", u); /* { dg-warning "flag" "bad use of space flag" } */
  63   printf ("% u", u); /* { dg-warning "flag" "bad use of space flag" } */
  64   printf ("% x", u); /* { dg-warning "flag" "bad use of space flag" } */
  65   printf ("% X", u); /* { dg-warning "flag" "bad use of space flag" } */
  66   printf ("% c", i); /* { dg-warning "flag" "bad use of space flag" } */
  67   printf ("% s", s); /* { dg-warning "flag" "bad use of space flag" } */
  68   printf ("% p", p); /* { dg-warning "flag" "bad use of space flag" } */
  69   printf ("% n", n); /* { dg-warning "flag" "bad use of space flag" } */
  70   /* Uses of the # flag.  */
  71   printf ("%#o%#x%#X%#e%#E%#f%#g%#G", u, u, u, d, d, d,
  72           d, d);
  73   printf ("%#d", i); /* { dg-warning "flag" "bad use of # flag" } */
  74   printf ("%#i", i); /* { dg-warning "flag" "bad use of # flag" } */
  75   printf ("%#u", u); /* { dg-warning "flag" "bad use of # flag" } */
  76   printf ("%#c", i); /* { dg-warning "flag" "bad use of # flag" } */
  77   printf ("%#s", s); /* { dg-warning "flag" "bad use of # flag" } */
  78   printf ("%#p", p); /* { dg-warning "flag" "bad use of # flag" } */
  79   printf ("%#n", n); /* { dg-warning "flag" "bad use of # flag" } */
  80   /* Uses of the 0 flag.  */
  81   printf ("%08d%08i%08o%08u%08x%08X%08e%08E%08f%08g%08G", i, i,
  82           u, u, u, u, d, d, d, d, d);
  83   printf ("%0c", i); /* { dg-warning "flag" "bad use of 0 flag" } */
  84   printf ("%0s", s); /* { dg-warning "flag" "bad use of 0 flag" } */
  85   printf ("%0p", p); /* { dg-warning "flag" "bad use of 0 flag" } */
  86   printf ("%0n", n); /* { dg-warning "flag" "bad use of 0 flag" } */
  87   /* 0 flag ignored with - flag.  */
  88   printf ("%-08d", i); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  89   printf ("%-08i", i); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  90   printf ("%-08o", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  91   printf ("%-08u", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  92   printf ("%-08x", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  93   printf ("%-08X", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  94   printf ("%-08e", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  95   printf ("%-08E", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  96   printf ("%-08f", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  97   printf ("%-08F", d); /* { dg-warning "unknown|format" "0 flag ignored with - flag" } */
  98   printf ("%-08g", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
  99   printf ("%-08G", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */
 100   printf ("%-08a", d); /* { dg-warning "unknown|format" "0 flag ignored with - flag" } */
 101   printf ("%-08A", d); /* { dg-warning "unknown|format" "0 flag ignored with - flag" } */
 102   /* Various tests of bad argument types.  Mostly covered in c90-printf-1.c;
 103      here just test for pointer target sign with %hhn.  (Probably allowed
 104      by the standard, but a bad idea, so GCC should diagnose if what
 105      is used is not signed char *.)
 106   */
 107   printf ("%hhn", s); /* { dg-warning "unknown|format" "%hhn is unsupported" } */
 108   printf ("%hhn", us); /* { dg-warning "unknown|format" "%hhn is unsupported" } */
 109 }