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
foo(int i,unsigned int u,double d,char * s,void * p,int * n,long double ld,wint_t lc,wchar_t * ls,long long int ll,unsigned long long int ull,signed char * ss,unsigned char * us,long long int * lln,intmax_t j,uintmax_t uj,intmax_t * jn,size_t z,signed_size_t sz,signed_size_t * zn,ptrdiff_t t,ptrdiff_t * tn)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 }
110