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Bug #28829 empty parameters cause crash
Submitted: 2004-06-18 14:36 UTC Modified: 2004-07-14 02:16 UTC
Avg. Score:4.5 ± 0.5
Reproduced:2 of 2 (100.0%)
Same Version:1 (50.0%)
Same OS:0 (0.0%)
From: rashid at ds dot pg dot gda dot pl Assigned:
Status: Closed Package: BC math related
PHP Version: 5CVS-2004-06-18 (dev) OS: win 2k3
Private report: No CVE-ID:
 [2004-06-18 14:36 UTC] rashid at ds dot pg dot gda dot pl
description in describes the problem well. there is also the same problem with bcsub. its reported again because the bug is still present in latest cvs build.

Reproduce code:
PEAR`s Benchmark_Timer::getProfiling():
//... this is part of loop - first settings of parameters are empty, and apache throws exception right away
$diff  = bcsub($time, $temp, 6);
$total = bcadd($total, $diff, 6);  

Actual result:
apache exception ['memory cannot be read']


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 [2004-06-28 01:19 UTC] rashid at ds dot pg dot gda dot pl
some more precise info
in above example: $total = $temp = 0

i tried other settings:
$total = $temp = '0' still caused error.
$total = $temp = '0.0' worked fine

hope this info helps - it looks like some kind of variable type conversion problems
 [2004-07-13 22:41 UTC] chris at leftbrained dot org
I'm still experiencing this issue, exactly as described, using a build from this mornings CVS.

I'm using Apache2 and Windows 2k Pro, with PHP compiled as a module, and lib_mysql and lib_mysqli in use.

I'm available for any tests that might be necessary, though I'm not comfortable compiling PHP on Windows.
 [2004-07-14 02:16 UTC]
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
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