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Ensure isinff, isinfl, isnanf, and isnanl are defined (Bug 19439)

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In ICO C++11 mode ensure that isinff, isinfl, isnanf, and isnanl
are defined.  These functions were accidentally removed from the
header as part of commit d9b965fa56,
but being GNU extensions, they should have been left in place.
This commit is contained in:
Carlos O'Donell 2016-02-14 19:27:06 -05:00
parent 1233be7669
commit 3c47c83a97
4 changed files with 71 additions and 3 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
2016-02-14 Jakub Jelinek <jakub@redhat.com>
Jonathan Wakely <jwakely@redhat.com>
Carlos O'Donell <carlos@redhat.com>
[BZ 19439]
* math/Makefile (tests): Add test-math-isinff.
(CFLAGS-test-math-isinff.cc): Use -std=gnu++11.
* math/bits/mathcalls.h [__USE_MISC]: Use
'|| __MATH_DECLARING_DOUBLE == 0' to relax definition of
functions not in C++11 and which don't conflict e.g. isinff,
isinfl etc.
* math/test-math-isinff.cc: New file.
2016-02-12 Florian Weimer <fweimer@redhat.com>
* misc/bug18240.c (do_test): Set RLIMIT_AS.

3
math/Makefile
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@ -114,6 +114,7 @@ tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
test-signgam-uint test-signgam-uint-init test-signgam-ullong \
test-signgam-ullong-init test-nan-overflow test-nan-payload \
test-math-isinff \
$(tests-static)
tests-static = test-fpucw-static test-fpucw-ieee-static \
test-signgam-uchar-static test-signgam-uchar-init-static \
@ -220,6 +221,8 @@ CFLAGS-test-signgam-ullong-init.c = -std=c99
CFLAGS-test-signgam-ullong-static.c = -std=c99
CFLAGS-test-signgam-ullong-init-static.c = -std=c99
CFLAGS-test-math-isinff.cc = -std=gnu++11
# The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
# for error handling in the -lm functions.
install-lib += libieee.a

8
math/bits/mathcalls.h
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@ -196,7 +196,9 @@ __MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
_Mdouble_END_NAMESPACE
#ifdef __USE_MISC
# if !defined __cplusplus || __cplusplus < 201103L /* Conflicts with C++11. */
# if (!defined __cplusplus \
|| __cplusplus < 201103L /* isinf conflicts with C++11. */ \
|| __MATH_DECLARING_DOUBLE == 0) /* isinff or isinfl don't. */
/* Return 0 if VALUE is finite or NaN, +1 if it
is +Infinity, -1 if it is -Infinity. */
__MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
@ -232,7 +234,9 @@ __END_NAMESPACE_C99
__MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
#if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
# if !defined __cplusplus || __cplusplus < 201103L /* Conflicts with C++11. */
# if (!defined __cplusplus \
|| __cplusplus < 201103L /* isnan conflicts with C++11. */ \
|| __MATH_DECLARING_DOUBLE == 0) /* isnanf or isnanl don't. */
/* Return nonzero if VALUE is not a number. */
__MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
# endif

48
math/test-math-isinff.cc Normal file
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@ -0,0 +1,48 @@
/* Test for bug 19439.
Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Marek Polacek <polacek@redhat.com>, 2012.
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/>. */
#define _GNU_SOURCE 1
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static int
do_test (void)
{
/* Verify that isinff, isinfl, isnanf, and isnanlf are defined
in the header under C++11 and can be called. Without the
header fix this test will not compile. */
if (isinff (1.0f)
|| !isinff (INFINITY)
|| isinfl (1.0L)
|| !isinfl (INFINITY)
|| isnanf (2.0f)
|| !isnanf (NAN)
|| isnanl (2.0L)
|| !isnanl (NAN))
{
printf ("FAIL: Failed to call is* functions.\n");
exit (1);
}
printf ("PASS: Able to call isinff, isinfl, isnanf, and isnanl.\n");
exit (0);
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"