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/* Copyright (C) 2000-2024 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 arbitrarily 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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