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 } */ 7/* { dg-options "-std=iso9899:1999 -pedantic -Wformat" } */ 8 9#include "format.h" 10 11void 12foo (int i, unsigned int u, double d, char *s, void *p, int *n, 13 long double ld, wint_t lc, wchar_t *ls, long long int ll, 14 unsigned long long int ull, signed char *ss, unsigned char *us, 15 long long int *lln, intmax_t j, uintmax_t uj, intmax_t *jn, 16 size_t z, signed_size_t sz, signed_size_t *zn, 17 ptrdiff_t t, ptrdiff_t *tn) 18{ 19 /* See ISO/IEC 9899:1999 (E) subclause 7.19.6.1 (pages 273-281). 20 We do not repeat here most of the checks for correct C90 formats 21 or completely broken formats. 22 */ 23 /* Valid and invalid %h, %hh, %l, %ll, %j, %z, %t, %L constructions. */ 24 printf ("%hf", d); /* { dg-warning "length" "bad use of %h" } */ 25 printf ("%hF", d); /* { dg-warning "length" "bad use of %h" } */ 26 printf ("%he", d); /* { dg-warning "length" "bad use of %h" } */ 27 printf ("%hE", d); /* { dg-warning "length" "bad use of %h" } */ 28 printf ("%hg", d); /* { dg-warning "length" "bad use of %h" } */ 29 printf ("%hG", d); /* { dg-warning "length" "bad use of %h" } */ 30 printf ("%ha", d); /* { dg-warning "length" "bad use of %h" } */ 31 printf ("%hA", d); /* { dg-warning "length" "bad use of %h" } */ 32 printf ("%hc", i); /* { dg-warning "length" "bad use of %h" } */ 33 printf ("%hs", s); /* { dg-warning "length" "bad use of %h" } */ 34 printf ("%hp", p); /* { dg-warning "length" "bad use of %h" } */ 35 printf ("%hhd%hhi%hho%hhu%hhx%hhX", i, i, u, u, u, u); 36 printf ("%hhn", ss); 37 printf ("%hhf", d); /* { dg-warning "length" "bad use of %hh" } */ 38 printf ("%hhF", d); /* { dg-warning "length" "bad use of %hh" } */ 39 printf ("%hhe", d); /* { dg-warning "length" "bad use of %hh" } */ 40 printf ("%hhE", d); /* { dg-warning "length" "bad use of %hh" } */ 41 printf ("%hhg", d); /* { dg-warning "length" "bad use of %hh" } */ 42 printf ("%hhG", d); /* { dg-warning "length" "bad use of %hh" } */ 43 printf ("%hha", d); /* { dg-warning "length" "bad use of %hh" } */ 44 printf ("%hhA", d); /* { dg-warning "length" "bad use of %hh" } */ 45 printf ("%hhc", i); /* { dg-warning "length" "bad use of %hh" } */ 46 printf ("%hhs", s); /* { dg-warning "length" "bad use of %hh" } */ 47 printf ("%hhp", p); /* { dg-warning "length" "bad use of %hh" } */ 48 printf ("%lc", lc); 49 printf ("%ls", ls); 50 printf ("%lf%lF%le%lE%lg%lG%la%lA", d, d, d, d, d, d, d, d); 51 printf ("%lp", p); /* { dg-warning "length|C" "bad use of %l" } */ 52 printf ("%lld%lli%llo%llu%llx%llX", ll, ll, ull, ull, ull, ull); 53 printf ("%lln", lln); 54 printf ("%llf", d); /* { dg-warning "length" "bad use of %ll" } */ 55 printf ("%llF", d); /* { dg-warning "length" "bad use of %ll" } */ 56 printf ("%lle", d); /* { dg-warning "length" "bad use of %ll" } */ 57 printf ("%llE", d); /* { dg-warning "length" "bad use of %ll" } */ 58 printf ("%llg", d); /* { dg-warning "length" "bad use of %ll" } */ 59 printf ("%llG", d); /* { dg-warning "length" "bad use of %ll" } */ 60 printf ("%lla", d); /* { dg-warning "length" "bad use of %ll" } */ 61 printf ("%llA", d); /* { dg-warning "length" "bad use of %ll" } */ 62 printf ("%llc", i); /* { dg-warning "length" "bad use of %ll" } */ 63 printf ("%lls", s); /* { dg-warning "length" "bad use of %ll" } */ 64 printf ("%llp", p); /* { dg-warning "length" "bad use of %ll" } */ 65 printf ("%jd%ji%jo%ju%jx%jX", j, j, uj, uj, uj, uj); /* { dg-bogus "length" "bogus %j warning" { target *-*-* } } */ 66 printf ("%jn", jn); /* { dg-bogus "length" "bogus %j warning" { target *-*-* } } */ 67 printf ("%jf", d); /* { dg-warning "length" "bad use of %j" } */ 68 printf ("%jF", d); /* { dg-warning "length" "bad use of %j" } */ 69 printf ("%je", d); /* { dg-warning "length" "bad use of %j" } */ 70 printf ("%jE", d); /* { dg-warning "length" "bad use of %j" } */ 71 printf ("%jg", d); /* { dg-warning "length" "bad use of %j" } */ 72 printf ("%jG", d); /* { dg-warning "length" "bad use of %j" } */ 73 printf ("%ja", d); /* { dg-warning "length" "bad use of %j" } */ 74 printf ("%jA", d); /* { dg-warning "length" "bad use of %j" } */ 75 printf ("%jc", i); /* { dg-warning "length" "bad use of %j" } */ 76 printf ("%js", s); /* { dg-warning "length" "bad use of %j" } */ 77 printf ("%jp", p); /* { dg-warning "length" "bad use of %j" } */ 78 printf ("%zd%zi%zo%zu%zx%zX", sz, sz, z, z, z, z); 79 printf ("%zn", zn); 80 printf ("%zf", d); /* { dg-warning "length" "bad use of %z" } */ 81 printf ("%zF", d); /* { dg-warning "length" "bad use of %z" } */ 82 printf ("%ze", d); /* { dg-warning "length" "bad use of %z" } */ 83 printf ("%zE", d); /* { dg-warning "length" "bad use of %z" } */ 84 printf ("%zg", d); /* { dg-warning "length" "bad use of %z" } */ 85 printf ("%zG", d); /* { dg-warning "length" "bad use of %z" } */ 86 printf ("%za", d); /* { dg-warning "length" "bad use of %z" } */ 87 printf ("%zA", d); /* { dg-warning "length" "bad use of %z" } */ 88 printf ("%zc", i); /* { dg-warning "length" "bad use of %z" } */ 89 printf ("%zs", s); /* { dg-warning "length" "bad use of %z" } */ 90 printf ("%zp", p); /* { dg-warning "length" "bad use of %z" } */ 91 printf ("%td%ti%to%tu%tx%tX", t, t, t, t, t, t); 92 printf ("%tn", tn); 93 printf ("%tf", d); /* { dg-warning "length" "bad use of %t" } */ 94 printf ("%tF", d); /* { dg-warning "length" "bad use of %t" } */ 95 printf ("%te", d); /* { dg-warning "length" "bad use of %t" } */ 96 printf ("%tE", d); /* { dg-warning "length" "bad use of %t" } */ 97 printf ("%tg", d); /* { dg-warning "length" "bad use of %t" } */ 98 printf ("%tG", d); /* { dg-warning "length" "bad use of %t" } */ 99 printf ("%ta", d); /* { dg-warning "length" "bad use of %t" } */ 100 printf ("%tA", d); /* { dg-warning "length" "bad use of %t" } */ 101 printf ("%tc", i); /* { dg-warning "length" "bad use of %t" } */ 102 printf ("%ts", s); /* { dg-warning "length" "bad use of %t" } */ 103 printf ("%tp", p); /* { dg-warning "length" "bad use of %t" } */ 104 printf ("%Le%LE%Lf%LF%Lg%LG%La%LA", ld, ld, ld, ld, ld, ld, ld, ld); 105 /* These next six are accepted by GCC as referring to long long, 106 but -pedantic correctly warns. 107 */ 108 printf ("%Ld", ll); /* { dg-warning "does not support" "bad use of %L" } */ 109 printf ("%Li", ll); /* { dg-warning "does not support" "bad use of %L" } */ 110 printf ("%Lo", ull); /* { dg-warning "does not support" "bad use of %L" } */ 111 printf ("%Lu", ull); /* { dg-warning "does not support" "bad use of %L" } */ 112 printf ("%Lx", ull); /* { dg-warning "does not support" "bad use of %L" } */ 113 printf ("%LX", ull); /* { dg-warning "does not support" "bad use of %L" } */ 114 printf ("%Lc", i); /* { dg-warning "length" "bad use of %L" } */ 115 printf ("%Ls", s); /* { dg-warning "length" "bad use of %L" } */ 116 printf ("%Lp", p); /* { dg-warning "length" "bad use of %L" } */ 117 printf ("%Ln", n); /* { dg-warning "length" "bad use of %L" } */ 118 /* Valid uses of each bare conversion. */ 119 printf ("%d%i%o%u%x%X%f%F%e%E%g%G%a%A%c%s%p%n%%", i, i, u, u, u, u, 120 d, d, d, d, d, d, d, d, i, s, p, n); 121 /* Uses of the - flag (valid on all non-%, non-n conversions). */ 122 printf ("%-d%-i%-o%-u%-x%-X%-f%-F%-e%-E%-g%-G%-a%-A%-c%-s%-p", i, i, 123 u, u, u, u, d, d, d, d, d, d, d, d, i, s, p); 124 printf ("%-n", n); /* { dg-warning "flag" "bad use of %-n" } */ 125 /* Uses of the + flag (valid on signed conversions only). */ 126 printf ("%+d%+i%+f%+F%+e%+E%+g%+G%+a%+A\n", i, i, d, d, d, d, d, d, d, d); 127 printf ("%+o", u); /* { dg-warning "flag" "bad use of + flag" } */ 128 printf ("%+u", u); /* { dg-warning "flag" "bad use of + flag" } */ 129 printf ("%+x", u); /* { dg-warning "flag" "bad use of + flag" } */ 130 printf ("%+X", u); /* { dg-warning "flag" "bad use of + flag" } */ 131 printf ("%+c", i); /* { dg-warning "flag" "bad use of + flag" } */ 132 printf ("%+s", s); /* { dg-warning "flag" "bad use of + flag" } */ 133 printf ("%+p", p); /* { dg-warning "flag" "bad use of + flag" } */ 134 printf ("%+n", n); /* { dg-warning "flag" "bad use of + flag" } */ 135 /* Uses of the space flag (valid on signed conversions only, and ignored 136 with +). 137 */ 138 printf ("% +d", i); /* { dg-warning "use of both|ignored" "use of space and + flags" } */ 139 printf ("%+ d", i); /* { dg-warning "use of both|ignored" "use of space and + flags" } */ 140 printf ("% d% i% f% F% e% E% g% G% a% A\n", i, i, d, d, d, d, d, d, d, d); 141 printf ("% o", u); /* { dg-warning "flag" "bad use of space flag" } */ 142 printf ("% u", u); /* { dg-warning "flag" "bad use of space flag" } */ 143 printf ("% x", u); /* { dg-warning "flag" "bad use of space flag" } */ 144 printf ("% X", u); /* { dg-warning "flag" "bad use of space flag" } */ 145 printf ("% c", i); /* { dg-warning "flag" "bad use of space flag" } */ 146 printf ("% s", s); /* { dg-warning "flag" "bad use of space flag" } */ 147 printf ("% p", p); /* { dg-warning "flag" "bad use of space flag" } */ 148 printf ("% n", n); /* { dg-warning "flag" "bad use of space flag" } */ 149 /* Uses of the # flag. */ 150 printf ("%#o%#x%#X%#e%#E%#f%#F%#g%#G%#a%#A", u, u, u, d, d, d, d, 151 d, d, d, d); 152 printf ("%#d", i); /* { dg-warning "flag" "bad use of # flag" } */ 153 printf ("%#i", i); /* { dg-warning "flag" "bad use of # flag" } */ 154 printf ("%#u", u); /* { dg-warning "flag" "bad use of # flag" } */ 155 printf ("%#c", i); /* { dg-warning "flag" "bad use of # flag" } */ 156 printf ("%#s", s); /* { dg-warning "flag" "bad use of # flag" } */ 157 printf ("%#p", p); /* { dg-warning "flag" "bad use of # flag" } */ 158 printf ("%#n", n); /* { dg-warning "flag" "bad use of # flag" } */ 159 /* Uses of the 0 flag. */ 160 printf ("%08d%08i%08o%08u%08x%08X%08e%08E%08f%08F%08g%08G%08a%08A", i, i, 161 u, u, u, u, d, d, d, d, d, d, d, d); 162 printf ("%0c", i); /* { dg-warning "flag" "bad use of 0 flag" } */ 163 printf ("%0s", s); /* { dg-warning "flag" "bad use of 0 flag" } */ 164 printf ("%0p", p); /* { dg-warning "flag" "bad use of 0 flag" } */ 165 printf ("%0n", n); /* { dg-warning "flag" "bad use of 0 flag" } */ 166 /* 0 flag ignored with precision for certain types, not others. */ 167 printf ("%08.5d", i); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 168 printf ("%08.5i", i); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 169 printf ("%08.5o", u); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 170 printf ("%08.5u", u); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 171 printf ("%08.5x", u); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 172 printf ("%08.5X", u); /* { dg-warning "ignored" "0 flag ignored with precision" } */ 173 printf ("%08.5f%08.5F%08.5e%08.5E%08.5g%08.5G%08.5a%08.5A", 174 d, d, d, d, d, d, d, d); 175 /* 0 flag ignored with - flag. */ 176 printf ("%-08d", i); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 177 printf ("%-08i", i); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 178 printf ("%-08o", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 179 printf ("%-08u", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 180 printf ("%-08x", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 181 printf ("%-08X", u); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 182 printf ("%-08e", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 183 printf ("%-08E", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 184 printf ("%-08f", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 185 printf ("%-08F", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 186 printf ("%-08g", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 187 printf ("%-08G", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 188 printf ("%-08a", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 189 printf ("%-08A", d); /* { dg-warning "flags|ignored" "0 flag ignored with - flag" } */ 190 /* Various tests of bad argument types. Mostly covered in c90-printf-1.c; 191 here just test for pointer target sign with %hhn. (Probably allowed 192 by the standard, but a bad idea, so GCC should diagnose if what 193 is used is not signed char *.) 194 */ 195 printf ("%hhn", s); /* { dg-warning "format" "%hhn plain char" } */ 196 printf ("%hhn", us); /* { dg-warning "format" "%hhn unsigned char" } */ 197} 198