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Bug #29843 A pretty segfault in ctype_digit()
Submitted: 2004-08-26 00:08 UTC Modified: 2004-08-26 08:58 UTC
From: guth at fiifo dot u-psud dot fr Assigned:
Status: Closed Package: Reproducible crash
PHP Version: 5.0.1 OS: Linux (Mandrake 9.2)
Private report: No CVE-ID: None
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From: guth at fiifo dot u-psud dot fr
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 [2004-08-26 00:08 UTC] guth at fiifo dot u-psud dot fr 
Description:
------------
Please excuse me for my english, but i am french...

So i found a problem with ctype_digit() function, who seems to crash PHP with a big (or not ?) integer.

Reproduce code:
---------------
<?
$id = 1000000000;
ctype_digit($id);
?>

Expected result:
----------------
A warning or something like that, because $id is an integer, but not a segfault...

Actual result:
--------------
nothing, except a new line in my apache error_log file : 

[Thu Aug 26 00:00:18 2004] [notice] child pid 3877 exit signal Segmentation fault (11)

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 [2004-08-26 00:12 UTC] kiad at free dot fr 
It seems the bug comes from ctype librairy : 
 
#include <ctype.h> 
 
int main(int argc, char ** argv) { 
  int i  = isdigit(1000000000); 
} 
 
$ gcc test.c -o plop 
$ ./plop 
Segmentation fault
 [2004-08-26 02:03 UTC] iliaa@php.net 
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.
 [2004-08-26 08:58 UTC] derick@php.net 
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.
 [2004-08-26 08:58 UTC] derick@php.net 
Sorry, wrong button.
 
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