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 }