gcc/testsuite/gcc.dg/format/c99-scanf-1.c

   1 /* Test for scanf 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
  11 void
  12 foo (int *ip, unsigned int *uip, short int *hp, unsigned short int *uhp,
  13      signed char *hhp, unsigned char *uhhp, long int *lp,
  14      unsigned long int *ulp, float *fp, double *dp, long double *ldp, char *s,
  15      void **pp, int *n, long long *llp, unsigned long long *ullp, wchar_t *ls,
  16      short int *hn, signed char *hhn, long int *ln, long long int *lln,
  17      intmax_t *jp, uintmax_t *ujp, intmax_t *jn, size_t *zp,
  18      signed_size_t *szp, signed_size_t *zn, ptrdiff_t *tp,
  19      unsigned_ptrdiff_t *utp, ptrdiff_t *tn)
  20 {
  21   /* See ISO/IEC 9899:1999 (E) subclause 7.19.6.2 (pages 281-288).
  22      We do not repeat here most of the checks for correct C90 formats
  23      or completely broken formats.
  24   */
  25   /* Valid, invalid and silly assignment-suppression
  26      and width constructions.
  27   */
  28   scanf ("%*d%*i%*o%*u%*x%*X%*a%*A%*e%*E%*f%*F%*g%*G%*s%*[abc]%*c%*p");
  29   scanf ("%*2d%*8s%*3c");
  30   scanf ("%*n", n); /* { dg-warning "suppress" "suppression of %n" } */
  31   scanf ("%*hd"); /* { dg-warning "together" "suppression with length" } */
  32   scanf ("%2d%3i%4o%5u%6x%7X%8a%9A%10e%11E%12f%13F%14g%15G%16s%3[abc]%4c%5p",
  33          ip, ip, uip, uip, uip, uip, fp, fp, fp, fp, fp, fp, fp, fp,
  34          s, s, s, pp);
  35   scanf ("%0d", ip); /* { dg-warning "width" "warning for zero width" } */
  36   scanf ("%3n", n); /* { dg-warning "width" "width with %n" } */
  37   /* Valid and invalid %h, %hh, %l, %ll, %j, %z, %t, %L constructions.  */
  38   scanf ("%hd%hi%ho%hu%hx%hX%hn", hp, hp, uhp, uhp, uhp, uhp, hn);
  39   scanf ("%ha", fp); /* { dg-warning "length" "bad use of %h" } */
  40   scanf ("%hA", fp); /* { dg-warning "length" "bad use of %h" } */
  41   scanf ("%he", fp); /* { dg-warning "length" "bad use of %h" } */
  42   scanf ("%hE", fp); /* { dg-warning "length" "bad use of %h" } */
  43   scanf ("%hf", fp); /* { dg-warning "length" "bad use of %h" } */
  44   scanf ("%hF", fp); /* { dg-warning "length" "bad use of %h" } */
  45   scanf ("%hg", fp); /* { dg-warning "length" "bad use of %h" } */
  46   scanf ("%hG", fp); /* { dg-warning "length" "bad use of %h" } */
  47   scanf ("%hs", s); /* { dg-warning "length" "bad use of %h" } */
  48   scanf ("%h[ac]", s); /* { dg-warning "length" "bad use of %h" } */
  49   scanf ("%hc", s); /* { dg-warning "length" "bad use of %h" } */
  50   scanf ("%hp", pp); /* { dg-warning "length" "bad use of %h" } */
  51   scanf ("%hhd%hhi%hho%hhu%hhx%hhX%hhn", hhp, hhp, uhhp, uhhp, uhhp, uhhp,
  52          hhn);
  53   scanf ("%hha", fp); /* { dg-warning "length" "bad use of %hh" } */
  54   scanf ("%hhA", fp); /* { dg-warning "length" "bad use of %hh" } */
  55   scanf ("%hhe", fp); /* { dg-warning "length" "bad use of %hh" } */
  56   scanf ("%hhE", fp); /* { dg-warning "length" "bad use of %hh" } */
  57   scanf ("%hhf", fp); /* { dg-warning "length" "bad use of %hh" } */
  58   scanf ("%hhF", fp); /* { dg-warning "length" "bad use of %hh" } */
  59   scanf ("%hhg", fp); /* { dg-warning "length" "bad use of %hh" } */
  60   scanf ("%hhG", fp); /* { dg-warning "length" "bad use of %hh" } */
  61   scanf ("%hhs", s); /* { dg-warning "length" "bad use of %hh" } */
  62   scanf ("%hh[ac]", s); /* { dg-warning "length" "bad use of %hh" } */
  63   scanf ("%hhc", s); /* { dg-warning "length" "bad use of %hh" } */
  64   scanf ("%hhp", pp); /* { dg-warning "length" "bad use of %hh" } */
  65   scanf ("%ld%li%lo%lu%lx%lX%ln", lp, lp, ulp, ulp, ulp, ulp, ln);
  66   scanf ("%la%lA%le%lE%lf%lF%lg%lG", dp, dp, dp, dp, dp, dp, dp, dp);
  67   scanf ("%lp", pp); /* { dg-warning "length" "bad use of %l" } */
  68   scanf ("%ls", ls);
  69   scanf ("%l[ac]", ls);
  70   scanf ("%lc", ls);
  71   scanf ("%lld%lli%llo%llu%llx%llX%lln", llp, llp, ullp, ullp, ullp, ullp,
  72          lln);
  73   scanf ("%lla", fp); /* { dg-warning "length" "bad use of %ll" } */
  74   scanf ("%llA", fp); /* { dg-warning "length" "bad use of %ll" } */
  75   scanf ("%lle", fp); /* { dg-warning "length" "bad use of %ll" } */
  76   scanf ("%llE", fp); /* { dg-warning "length" "bad use of %ll" } */
  77   scanf ("%llf", fp); /* { dg-warning "length" "bad use of %ll" } */
  78   scanf ("%llF", fp); /* { dg-warning "length" "bad use of %ll" } */
  79   scanf ("%llg", fp); /* { dg-warning "length" "bad use of %ll" } */
  80   scanf ("%llG", fp); /* { dg-warning "length" "bad use of %ll" } */
  81   scanf ("%lls", s); /* { dg-warning "length" "bad use of %ll" } */
  82   scanf ("%ll[ac]", s); /* { dg-warning "length" "bad use of %ll" } */
  83   scanf ("%llc", s); /* { dg-warning "length" "bad use of %ll" } */
  84   scanf ("%llp", pp); /* { dg-warning "length" "bad use of %ll" } */
  85   scanf ("%jd%ji%jo%ju%jx%jX%jn", jp, jp, ujp, ujp, ujp, ujp, jn); /* { dg-bogus "length" "bogus %j warning" { target *-*-* } } */
  86   scanf ("%ja", fp); /* { dg-warning "length" "bad use of %j" } */
  87   scanf ("%jA", fp); /* { dg-warning "length" "bad use of %j" } */
  88   scanf ("%je", fp); /* { dg-warning "length" "bad use of %j" } */
  89   scanf ("%jE", fp); /* { dg-warning "length" "bad use of %j" } */
  90   scanf ("%jf", fp); /* { dg-warning "length" "bad use of %j" } */
  91   scanf ("%jF", fp); /* { dg-warning "length" "bad use of %j" } */
  92   scanf ("%jg", fp); /* { dg-warning "length" "bad use of %j" } */
  93   scanf ("%jG", fp); /* { dg-warning "length" "bad use of %j" } */
  94   scanf ("%js", s); /* { dg-warning "length" "bad use of %j" } */
  95   scanf ("%j[ac]", s); /* { dg-warning "length" "bad use of %j" } */
  96   scanf ("%jc", s); /* { dg-warning "length" "bad use of %j" } */
  97   scanf ("%jp", pp); /* { dg-warning "length" "bad use of %j" } */
  98   scanf ("%zd%zi%zo%zu%zx%zX%zn", szp, szp, zp, zp, zp, zp, zn);
  99   scanf ("%za", fp); /* { dg-warning "length" "bad use of %z" } */
 100   scanf ("%zA", fp); /* { dg-warning "length" "bad use of %z" } */
 101   scanf ("%ze", fp); /* { dg-warning "length" "bad use of %z" } */
 102   scanf ("%zE", fp); /* { dg-warning "length" "bad use of %z" } */
 103   scanf ("%zf", fp); /* { dg-warning "length" "bad use of %z" } */
 104   scanf ("%zF", fp); /* { dg-warning "length" "bad use of %z" } */
 105   scanf ("%zg", fp); /* { dg-warning "length" "bad use of %z" } */
 106   scanf ("%zG", fp); /* { dg-warning "length" "bad use of %z" } */
 107   scanf ("%zs", s); /* { dg-warning "length" "bad use of %z" } */
 108   scanf ("%z[ac]", s); /* { dg-warning "length" "bad use of %z" } */
 109   scanf ("%zc", s); /* { dg-warning "length" "bad use of %z" } */
 110   scanf ("%zp", pp); /* { dg-warning "length" "bad use of %z" } */
 111   scanf ("%td%ti%to%tu%tx%tX%tn", tp, tp, utp, utp, utp, utp, tn);
 112   scanf ("%ta", fp); /* { dg-warning "length" "bad use of %t" } */
 113   scanf ("%tA", fp); /* { dg-warning "length" "bad use of %t" } */
 114   scanf ("%te", fp); /* { dg-warning "length" "bad use of %t" } */
 115   scanf ("%tE", fp); /* { dg-warning "length" "bad use of %t" } */
 116   scanf ("%tf", fp); /* { dg-warning "length" "bad use of %t" } */
 117   scanf ("%tF", fp); /* { dg-warning "length" "bad use of %t" } */
 118   scanf ("%tg", fp); /* { dg-warning "length" "bad use of %t" } */
 119   scanf ("%tG", fp); /* { dg-warning "length" "bad use of %t" } */
 120   scanf ("%ts", s); /* { dg-warning "length" "bad use of %t" } */
 121   scanf ("%t[ac]", s); /* { dg-warning "length" "bad use of %t" } */
 122   scanf ("%tc", s); /* { dg-warning "length" "bad use of %t" } */
 123   scanf ("%tp", pp); /* { dg-warning "length" "bad use of %t" } */
 124   scanf ("%La%LA%Le%LE%Lf%LF%Lg%LG", ldp, ldp, ldp, ldp, ldp, ldp, ldp, ldp);
 125   scanf ("%Ld", llp); /* { dg-warning "does not support" "bad use of %L" } */
 126   scanf ("%Li", llp); /* { dg-warning "does not support" "bad use of %L" } */
 127   scanf ("%Lo", ullp); /* { dg-warning "does not support" "bad use of %L" } */
 128   scanf ("%Lu", ullp); /* { dg-warning "does not support" "bad use of %L" } */
 129   scanf ("%Lx", ullp); /* { dg-warning "does not support" "bad use of %L" } */
 130   scanf ("%LX", ullp); /* { dg-warning "does not support" "bad use of %L" } */
 131   scanf ("%Ls", s); /* { dg-warning "length" "bad use of %L" } */
 132   scanf ("%L[ac]", s); /* { dg-warning "length" "bad use of %L" } */
 133   scanf ("%Lc", s); /* { dg-warning "length" "bad use of %L" } */
 134   scanf ("%Lp", pp); /* { dg-warning "length" "bad use of %L" } */
 135   scanf ("%Ln", n); /* { dg-warning "length" "bad use of %L" } */
 136   /* Valid uses of each bare conversion.  */
 137   scanf ("%d%i%o%u%x%X%a%A%e%E%f%F%g%G%s%[abc]%c%p%n%%", ip, ip, uip, uip, uip,
 138          uip, fp, fp, fp, fp, fp, fp, fp, fp, s, s, s, pp, n);
 139   /* Assert that %as is not treated as an extension in C99 mode.  */
 140   scanf ("%as", fp);
 141   scanf ("%a[", fp);
 142   /* Tests for bad argument types: pointer target sign with %hh.  */
 143   scanf ("%hhd", uhhp); /* { dg-warning "format" "%hhd sign" } */
 144   scanf ("%hhu", hhp); /* { dg-warning "format" "%hhu sign" } */
 145 }