gcc/testsuite/gcc.dg/format/ext-7.c

   1 /* Test for scanf formats.  %a and %m extensions.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=gnu89 -Wformat" } */
   4
   5 #include "format.h"
   6
   7 void
   8 foo (char **sp, wchar_t **lsp, int *ip, float *fp, void **pp, double *dp)
   9 {
  10   /* %a formats for allocation, only recognized in C90 mode, are a
  11      GNU extension.  Followed by other characters, %a is not treated
  12      specially.
  13   */
  14   scanf ("%as", sp);
  15   scanf ("%aS", lsp);
  16   scanf ("%las", dp);
  17   scanf ("%la", lsp);   /* { dg-warning "but argument 2 has type" } */
  18   scanf ("%las", lsp);  /* { dg-warning "but argument 2 has type" } */
  19   scanf ("%a[bcd]", sp);
  20   scanf ("%la[bcd]", dp);
  21   scanf ("%*as");
  22   scanf ("%*aS");
  23   scanf ("%*las");      /* { dg-warning "assignment suppression and length modifier" } */
  24   scanf ("%*a[bcd]");
  25   scanf ("%*la[bcd]");  /* { dg-warning "assignment suppression and length modifier" } */
  26   scanf ("%10as", sp);
  27   scanf ("%5aS", lsp);
  28   scanf ("%9las", dp);
  29   scanf ("%25a[bcd]", sp);
  30   scanf ("%48la[bcd]", dp);
  31   scanf ("%*10as");
  32   scanf ("%*5aS");
  33   scanf ("%*9las");     /* { dg-warning "assignment suppression and length modifier" } */
  34   scanf ("%*25a[bcd]");
  35   scanf ("%*48la[bcd]"); /* { dg-warning "assignment suppression and length modifier" } */
  36
  37   /* m assignment-allocation modifier, recognized in both C90
  38      and C99 modes, is a POSIX and ISO/IEC WDTR 24731-2 extension.  */
  39   scanf ("%ms", sp);
  40   scanf ("%mS", lsp);
  41   scanf ("%mls", lsp);
  42   scanf ("%m[bcd]", sp);
  43   scanf ("%ml[bcd]", lsp);
  44   scanf ("%mc", sp);
  45   scanf ("%mlc", lsp);
  46   scanf ("%mC", lsp);
  47   scanf ("%*ms");
  48   scanf ("%*mS");
  49   scanf ("%*mls");      /* { dg-warning "assignment suppression and length modifier" } */
  50   scanf ("%*m[bcd]");
  51   scanf ("%*ml[bcd]");  /* { dg-warning "assignment suppression and length modifier" } */
  52   scanf ("%*mc");
  53   scanf ("%*mlc");      /* { dg-warning "assignment suppression and length modifier" } */
  54   scanf ("%*mC");
  55   scanf ("%10ms", sp);
  56   scanf ("%5mS", lsp);
  57   scanf ("%9mls", lsp);
  58   scanf ("%25m[bcd]", sp);
  59   scanf ("%41ml[bcd]", lsp);
  60   scanf ("%131mc", sp);
  61   scanf ("%27mlc", lsp);
  62   scanf ("%2mC", lsp);
  63   scanf ("%*10ms");
  64   scanf ("%*5mS");
  65   scanf ("%*9mls");     /* { dg-warning "assignment suppression and length modifier" } */
  66   scanf ("%*25m[bcd]");
  67   scanf ("%*41ml[bcd]"); /* { dg-warning "assignment suppression and length modifier" } */
  68   scanf ("%*131mc");
  69   scanf ("%*27mlc");    /* { dg-warning "assignment suppression and length modifier" } */
  70   scanf ("%*2mC");
  71
  72   scanf ("%md", ip);    /* { dg-warning "flag used with" } */
  73   scanf ("%mi", ip);    /* { dg-warning "flag used with" } */
  74   scanf ("%mo", ip);    /* { dg-warning "flag used with" } */
  75   scanf ("%mu", ip);    /* { dg-warning "flag used with" } */
  76   scanf ("%mx", ip);    /* { dg-warning "flag used with" } */
  77   scanf ("%me", fp);    /* { dg-warning "flag used with" } */
  78   scanf ("%mf", fp);    /* { dg-warning "flag used with" } */
  79   scanf ("%mg", fp);    /* { dg-warning "flag used with" } */
  80   scanf ("%mp", pp);    /* { dg-warning "flag used with" } */
  81
  82   scanf ("%mas", sp);   /* { dg-warning "flag together" } */
  83   scanf ("%maS", lsp);  /* { dg-warning "flag together" } */
  84   scanf ("%ma[bcd]", sp);       /* { dg-warning "flag together" } */
  85 }