2023-01-19 11:50:20 +00:00
|
|
|
/* Test printf with grouping and padding (bug 30068)
|
2024-01-01 18:12:26 +00:00
|
|
|
Copyright (C) 2023-2024 Free Software Foundation, Inc.
|
2023-01-19 11:50:20 +00:00
|
|
|
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
|
|
|
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
|
|
|
|
|
|
#include <locale.h>
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
#include <support/check.h>
|
|
|
|
|
#include <support/support.h>
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
do_test (void)
|
|
|
|
|
{
|
|
|
|
|
char buf[80];
|
|
|
|
|
|
|
|
|
|
xsetlocale (LC_NUMERIC, "de_DE.UTF-8");
|
|
|
|
|
|
|
|
|
|
/* The format string has the following conversion specifier:
|
|
|
|
|
' - Use thousands grouping.
|
|
|
|
|
+ - The result of a signed conversion shall begin with a sign.
|
|
|
|
|
- - Left justified.
|
|
|
|
|
13 - Minimum 13 bytes of width.
|
|
|
|
|
9 - Minimum 9 digits of precision.
|
|
|
|
|
|
|
|
|
|
In bug 30068 the grouping characters were not accounted for in
|
|
|
|
|
the width, and were added after the fact resulting in a 15-byte
|
|
|
|
|
output instead of a 13-byte output. The two additional bytes
|
|
|
|
|
come from the locale-specific thousands separator. This increase
|
|
|
|
|
in size could result in a buffer overflow if a reasonable caller
|
|
|
|
|
calculated the size of the expected buffer using nl_langinfo to
|
|
|
|
|
determine the sie of THOUSEP in bytes.
|
|
|
|
|
|
|
|
|
|
This bug is distinct from bug 23432 which has to do with the
|
|
|
|
|
minimum precision calculation (digit based). */
|
|
|
|
|
sprintf (buf, "%+-'13.9d", 1234567);
|
|
|
|
|
TEST_COMPARE_STRING (buf, "+001.234.567 ");
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#include <support/test-driver.c>
|
