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glibc/stdio-common/tst-sscanf.c
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines 
We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date.  Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.

Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions.  These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.

The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively.  These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:

https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-09-03 22:06:44 +05:30

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/* Copyright (C) 2000-2021 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
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
#ifndef CHAR
# define CHAR char
# define L(str) str
# define SSCANF sscanf
#endif
const CHAR *str_double[] =
{
L("-.10000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01"),
L("0.10000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01"),
L("-1234567E0198765432E0912345678901987654321091234567890198765432109"),
L("-0.1000E+020.20000E+020.25000E+010.40000E+010.50000E+010.12500E+01")
};
const double val_double[] =
{
-.10000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01,
0.10000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01,
-1234567E01, 98765432E09, 12345678901.0, 98765432109.0, 12345678901.0,
98765432109.0,
-0.1000E+02, 0.20000E+02, 0.25000E+01, 0.40000E+01, 0.50000E+01, 0.12500E+01
};
const CHAR *str_long[] =
{
L("-12345678987654321123456789987654321123456789987654321"),
L("-12345678987654321123456789987654321123456789987654321"),
L("-12,345,678987,654,321123,456,789987,654,321123,456,789987,654,321"),
L("-12,345,678987,654,321123,456,789987,654,321123,456,789987,654,321")
};
const CHAR *fmt_long[] =
{
L("%9ld%9ld%9ld%9ld%9ld%9ld"),
L("%I9ld%I9ld%I9ld%I9ld%I9ld%I9ld"),
L("%'11ld%'11ld%'11ld%'11ld%'11ld%'11ld"),
L("%I'11ld%I'11ld%I'11ld%I'11ld%I'11ld%I'11ld")
};
const long int val_long[] =
{
-12345678, 987654321, 123456789, 987654321, 123456789, 987654321
};
struct test
{
const CHAR *str;
const CHAR *fmt;
int retval;
} int_tests[] =
{
{ L("foo\n"), L("foo\nbar"), -1 },
{ L("foo\n"), L("foo bar"), -1 },
{ L("foo\n"), L("foo %d"), -1 },
{ L("foo\n"), L("foo\n%d"), -1 },
{ L("foon"), L("foonbar"), -1 },
{ L("foon"), L("foon%d"), -1 },
{ L("foo "), L("foo bar"), -1 },
{ L("foo "), L("foo %d"), -1 },
{ L("foo\t"), L("foo\tbar"), -1 },
{ L("foo\t"), L("foo bar"), -1 },
{ L("foo\t"), L("foo %d"), -1 },
{ L("foo\t"), L("foo\t%d"), -1 },
{ L("foo"), L("foo"), 0 },
{ L("foon"), L("foo bar"), 0 },
{ L("foon"), L("foo %d"), 0 },
{ L("foo "), L("fooxbar"), 0 },
{ L("foo "), L("foox%d"), 0 },
{ L("foo bar"), L("foon"), 0 },
{ L("foo bar"), L("foo bar"), 0 },
{ L("foo bar"), L("foo %d"), 0 },
{ L("foo bar"), L("foon%d"), 0 },
{ L("foo (nil)"), L("foo %p"), 1},
{ L("foo (nil)"), L("foo %4p"), 0},
{ L("foo "), L("foo %n"), 0 },
{ L("foo%bar1"), L("foo%%bar%d"), 1 },
/* Some OSes skip whitespace here while others don't. */
{ L("foo \t %bar1"), L("foo%%bar%d"), 1 }
};
struct test double_tests[] =
{
{ L("-1"), L("%1g"), 0 },
{ L("-.1"), L("%2g"), 0 },
{ L("-inf"), L("%3g"), 0 },
{ L("+0"), L("%1g"), },
{ L("-0x1p0"), L("%2g"), 1 },
{ L("-..1"), L("%g"), 0 },
{ L("-inf"), L("%g"), 1 }
};
struct test2
{
const CHAR *str;
const CHAR *fmt;
int retval;
char residual;
} double_tests2[] =
{
{ L("0e+0"), L("%g%c"), 1, 0 },
{ L("0xe+0"), L("%g%c"), 2, '+' },
{ L("0x.e+0"), L("%g%c"), 2, '+' },
};
static int
do_test (void)
{
double d[6];
long l[6];
int i, j;
int tst_locale;
int result = 0;
tst_locale = 1;
if (tst_locale)
if (setlocale (LC_ALL, "en_US.ISO-8859-1") == NULL)
{
puts ("Failed to set en_US locale, skipping locale related tests");
tst_locale = 0;
}
for (i = 0; i < 4; ++i)
{
if (SSCANF (str_double[i], L("%11lf%11lf%11lf%11lf%11lf%11lf"),
&d[0], &d[1], &d[2], &d[3], &d[4], &d[5]) != 6)
{
printf ("Double sscanf test %d wrong number of "
"assigned inputs\n", i);
result = 1;
}
else
for (j = 0; j < 6; ++j)
if (d[j] != val_double[6 * i + j])
{
printf ("Double sscanf test %d failed (%g instead of %g)\n",
i, d[j], val_double[6 * i + j]);
result = 1;
break;
}
}
for (i = 0; i < 4; ++i)
{
if (SSCANF (str_long[i], fmt_long[i],
&l[0], &l[1], &l[2], &l[3], &l[4], &l[5]) != 6)
{
printf ("Integer sscanf test %d wrong number of "
"assigned inputs\n", i);
result = 1;
}
else
for (j = 0; j < 6; ++j)
if (l[j] != val_long[j])
{
printf ("Integer sscanf test %d failed (%ld instead %ld)\n",
i, l[j], val_long[j]);
result = 1;
break;
}
if (! tst_locale)
break;
}
for (i = 0; i < array_length (int_tests); ++i)
{
long dummy;
int ret;
if ((ret = SSCANF (int_tests[i].str, int_tests[i].fmt,
&dummy)) != int_tests[i].retval)
{
printf ("int_tests[%d] returned %d != %d\n",
i, ret, int_tests[i].retval);
result = 1;
}
}
for (i = 0; i < array_length (double_tests); ++i)
{
double dummy;
int ret;
if ((ret = SSCANF (double_tests[i].str, double_tests[i].fmt,
&dummy)) != double_tests[i].retval)
{
printf ("double_tests[%d] returned %d != %d\n",
i, ret, double_tests[i].retval);
result = 1;
}
}
for (i = 0; i < array_length (double_tests2); ++i)
{
double dummy;
int ret;
char c = 0;
if ((ret = SSCANF (double_tests2[i].str, double_tests2[i].fmt,
&dummy, &c)) != double_tests2[i].retval)
{
printf ("double_tests2[%d] returned %d != %d\n",
i, ret, double_tests2[i].retval);
result = 1;
}
else if (ret == 2 && c != double_tests2[i].residual)
{
printf ("double_tests2[%d] stopped at '%c' != '%c'\n",
i, c, double_tests2[i].residual);
result = 1;
}
}
/* BZ #16618
The test will segfault during SSCANF if the buffer overflow
is not fixed. The size of `s` is such that it forces the use
of malloc internally and this triggers the incorrect computation.
Thus the value for SIZE is arbitrariy high enough that malloc
is used. */
{
#define SIZE 131072
CHAR *s = malloc ((SIZE + 1) * sizeof (*s));
if (s == NULL)
abort ();
for (size_t i = 0; i < SIZE; i++)
s[i] = L('0');
s[SIZE] = L('\0');
int i = 42;
/* Scan multi-digit zero into `i`. */
if (SSCANF (s, L("%d"), &i) != 1)
{
printf ("FAIL: bug16618: SSCANF did not read one input item.\n");
result = 1;
}
if (i != 0)
{
printf ("FAIL: bug16618: Value of `i` was not zero as expected.\n");
result = 1;
}
free (s);
if (result != 1)
printf ("PASS: bug16618: Did not crash.\n");
#undef SIZE
}
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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