stdio-common/bug26.c

   1 /* Copyright (C) 2013-2021 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20
  21 int
  22 main (void)
  23 {
  24   FILE *f;
  25   int lost = 0;
  26   int c;
  27   double d;
  28   char s[] = "+.e";
  29
  30   f = fmemopen (s, strlen (s), "r");
  31   /* This should fail to parse a floating-point number, and leave 'e' in the
  32      input.  */
  33   lost |= (fscanf (f, "%lf", &d) != 0);
  34   c = fgetc (f);
  35   lost |= c != 'e';
  36   puts (lost ? "Test FAILED!" : "Test succeeded.");
  37   return lost;
  38 }