ID: 49244
Comment by: sjoerd-php at linuxonly dot nl
Reported By: ronlentjes at yahoo dot com dot au
Status: Open
Bug Type: Scripting Engine problem
Operating System: Linux Fedora 8
PHP Version: 5.3.0
New Comment:
Could reproduce with PHP 5.2.10.
Previous Comments:
------------------------------------------------------------------------
[2009-08-14 04:25:22] ronlentjes at yahoo dot com dot au
Perhaps you test it differently than I do. I'll give you the easiest
way to see it happen:
put this in a file called test.php:
---
<?
$d = pow(-1.0, 0.3);
printf ("%f\n", $d);
?>
---
Output will be (bash, Fedora 8, Linux):
# php test.php
---
NaN*A
---
Output for browser will be NaN??? or NaN???F or other variations of
that.
This is reporducable on versions 4.2.2 (crash), 5.2.4, 5.3.0 (as
indicated previously).
I just retried this now.
Cheers,
Ron Lentjes
LC CLS.
------------------------------------------------------------------------
[2009-08-13 14:29:39] ras...@php.net
I am unable to reproduce this in neither 5.2 nor 5.3, and Valgrind is
clean on Debian.
------------------------------------------------------------------------
[2009-08-13 14:14:51] ronlentjes at yahoo dot com dot au
Description:
------------
This has been an issue since 4.2.2 and still in 5.3.0.
$d = pow (-1.0, 0.3); // or anything causing NaN
echo "$d\n";
-> NAN
printf ("%f\n", $d);
(4.2.2) -> crash
(5.2.4) -> NaN<big-box><little-box><E-with-backslash-on-top>
(5.3.0) -> NaN<hex EF BF BD><hex EF BF BD><hex EF BF BD>
(viewed in browser as NaN???)
Two issues here:
Inconsistent display of NAN for echo and NaN for printf.
Output of bogus characters after the 3 letters NaN for printf.
I think you are missing a '\0' null termination after the NaN
characters which probably cause a runaway to crash 4.2.2 but is just
'hanging' in there for the newer versions.
Cheers,
Ron Lentjes
LC CLS.
Reproduce code:
---------------
$d = pow (-1.0, 0.3);
echo "$d\n";
printf ("%f\n", $d);
Expected result:
----------------
NaN
NaN
Actual result:
--------------
(4.2.2)
NAN
crash
(5.2.4)
NAN
NaN<big-box><little-box><E-with-backslash-on-top>
(5.3.0)
NAN
NaN<hex EF BF BD><hex EF BF BD><hex EF BF BD>
(viewed in browser as NaN???)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=49244&edit=1
