#33991 [NEW]: Bug test #25665 returns false positive on Solaris

From: Date: Thu, 04 Aug 2005 00:19:09 +0000
Subject: #33991 [NEW]: Bug test #25665 returns false positive on Solaris
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-82924@lists.php.net to get a copy of this message
From:             akim at freedom dot com
Operating system: Solaris 2.9 / SPARC
PHP version:      5.0.4
PHP Bug Type:     Math related
Bug description:  Bug test #25665 returns false positive on Solaris

Description:
------------
acos() function returns "0" rather than "NAN" for values of |x| > 1. Among
other things this causes test ext/standard/tests/math/bug25665.phpt to
fail.

This may be caused by ambiguous handling of out-of-range arguments in the
Solaris implementation of acos(). From the acos() man page: "If the value
of x is not in the range [-1,1], and is not +-Inf or NaN, either 0.0 or
NaN is returned and errno is set to EDOM."

Configure line:

./configure  --with-apxs=/www/apache/bin/apxs --with-mssql=/www/freetds063
--enable-ftp

Dependencies:

        libsybdb.so.5 =>         /www/freetds063/lib/libsybdb.so.5
        libnsl.so.1 =>   /lib/libnsl.so.1
        libsocket.so.1 =>        /lib/libsocket.so.1
        libc.so.1 =>     /lib/libc.so.1
        libresolv.so.2 =>        /lib/libresolv.so.2
        libm.so.1 =>     /lib/libm.so.1
        libdl.so.1 =>    /lib/libdl.so.1
        libz.so.1 =>     /lib/libz.so.1
        libxml2.so.2 =>  /usr/local/lib/libxml2.so.2
        libpthread.so.1 =>       /lib/libpthread.so.1
        libiconv.so.2 =>         /usr/local/lib/libiconv.so.2
        libgcc_s.so.1 =>         /usr/local/lib/libgcc_s.so.1
        libmp.so.2 =>    /lib/libmp.so.2
        /usr/platform/SUNW,UltraAX-i2/lib/libc_psr.so.1
        libthread.so.1 =>        /lib/libthread.so.1
        librt.so.1 =>    /lib/librt.so.1
        libaio.so.1 =>   /lib/libaio.so.1
        libmd5.so.1 =>   /lib/libmd5.so.1
        /usr/platform/SUNW,UltraAX-i2/lib/libmd5_psr.so.1


gcc -v output:

Reading specs from /usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.2/specs
Configured with: ../configure --with-as=/usr/ccs/bin/as
--with-ld=/usr/ccs/bin/ld --disable-nls
Thread model: posix
gcc version 3.4.2



Reproduce code:
---------------
<?php
set_time_limit(5);
var_dump(acos(1.01));
var_dump(log(0));
?>


Expected result:
----------------
float(NAN)
float(-INF)

Actual result:
--------------
float(0)
float(-INF)


-- 
Edit bug report at http://bugs.php.net/?id=33991&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=33991&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33991&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33991&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=33991&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=33991&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=33991&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=33991&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=33991&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=33991&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=33991&r=notwrong
Not enough info:             http://bugs.php.net/fix.php?id=33991&r=notenoughinfo
Submitted twice:             http://bugs.php.net/fix.php?id=33991&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=33991&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=33991&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=33991&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=33991&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=33991&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=33991&r=float
No Zend Extensions:          http://bugs.php.net/fix.php?id=33991&r=nozend
MySQL Configuration Error:   http://bugs.php.net/fix.php?id=33991&r=mysqlcfg


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