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 12void 13foo (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} 110