gcc/testsuite/gcc.dg/format/ext-8.c

   1 /* Test for scanf formats.  %m extensions.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=gnu99 -Wformat" } */
   4
   5 #include "format.h"
   6
   7 void
   8 foo (char **sp, wchar_t **lsp, int *ip, float *fp, void **pp)
   9 {
  10   /* m assignment-allocation modifier, recognized in both C90
  11      and C99 modes, is a POSIX and ISO/IEC WDTR 24731-2 extension.  */
  12   scanf ("%ms", sp);
  13   scanf ("%mS", lsp);
  14   scanf ("%mls", lsp);
  15   scanf ("%m[bcd]", sp);
  16   scanf ("%ml[bcd]", lsp);
  17   scanf ("%mc", sp);
  18   scanf ("%mlc", lsp);
  19   scanf ("%mC", lsp);
  20   scanf ("%*ms");
  21   scanf ("%*mS");
  22   scanf ("%*mls");      /* { dg-warning "assignment suppression and length modifier" } */
  23   scanf ("%*m[bcd]");
  24   scanf ("%*ml[bcd]");  /* { dg-warning "assignment suppression and length modifier" } */
  25   scanf ("%*mc");
  26   scanf ("%*mlc");      /* { dg-warning "assignment suppression and length modifier" } */
  27   scanf ("%*mC");
  28   scanf ("%10ms", sp);
  29   scanf ("%5mS", lsp);
  30   scanf ("%9mls", lsp);
  31   scanf ("%25m[bcd]", sp);
  32   scanf ("%41ml[bcd]", lsp);
  33   scanf ("%131mc", sp);
  34   scanf ("%27mlc", lsp);
  35   scanf ("%2mC", lsp);
  36   scanf ("%*10ms");
  37   scanf ("%*5mS");
  38   scanf ("%*9mls");     /* { dg-warning "assignment suppression and length modifier" } */
  39   scanf ("%*25m[bcd]");
  40   scanf ("%*41ml[bcd]"); /* { dg-warning "assignment suppression and length modifier" } */
  41   scanf ("%*131mc");
  42   scanf ("%*27mlc");    /* { dg-warning "assignment suppression and length modifier" } */
  43   scanf ("%*2mC");
  44
  45   scanf ("%md", ip);    /* { dg-warning "flag used with" } */
  46   scanf ("%mi", ip);    /* { dg-warning "flag used with" } */
  47   scanf ("%mo", ip);    /* { dg-warning "flag used with" } */
  48   scanf ("%mu", ip);    /* { dg-warning "flag used with" } */
  49   scanf ("%mx", ip);    /* { dg-warning "flag used with" } */
  50   scanf ("%ma", fp);    /* { dg-warning "flag used with" } */
  51   scanf ("%mA", fp);    /* { dg-warning "flag used with" } */
  52   scanf ("%me", fp);    /* { dg-warning "flag used with" } */
  53   scanf ("%mf", fp);    /* { dg-warning "flag used with" } */
  54   scanf ("%mg", fp);    /* { dg-warning "flag used with" } */
  55   scanf ("%mp", pp);    /* { dg-warning "flag used with" } */
  56 }