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Don't accept exp char without preceding digits in scanf float parsing

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This commit is contained in:
Andreas Schwab
2013-01-14 17:32:20 +01:00
parent 273cdee86d
commit 6ecec3b616
5 changed files with 61 additions and 12 deletions
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37
stdio-common/bug26.c Normal file
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@ -0,0 +1,37 @@
/* Copyright (C) 2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <string.h>
int
main (void)
{
FILE *f;
int lost = 0;
int c;
double d;
char s[] = "+.e";
f = fmemopen (s, strlen (s), "r");
/* This should fail to parse a float and leave 'e' in the input. */
lost |= (fscanf (f, "%f", &d) != 0);
c = fgetc (f);
lost |= c != 'e';
puts (lost ? "Test FAILED!" : "Test succeeded.");
return lost;
}