plz consider also sharing with the wp team
thx On Wed, May 20, 2015 at 10:58 AM, Tiago Marques <bugs@xxxxxxxxxxxx> wrote:
Hi there,
I've been running a PHP server with Wordpress for a good while now,
when I stumbled upon a problem uploading some posts, where the script
would enter a loop and run till it crashed, running out of process
memory.
I managed to create a test case based on Wordpress's code and my HTML
content, then narrowed down the loop and variables that are being
(apparently) corrupted in some way:
The relevant variables are $i and $l, which at the time the code blows
up, store 68 and 71, as integers. These are summed as a parameter to
substr() in the loop, which gets a float instead of the value "139".
The rest of the code runs a $text var and a $newtext var, upon which
the force_balance_tags() function from formatting.php iterates.
These are the dumps at the time when the code does bad things:
$i: int(68)
$l: int(71)
$i + $l: float(9.7837007760303E+18)
Only the sum gives wrong results, the other operations like
subtraction and multiplication produce accurate results. This only
happens in this iteration of the loop.
Previously, I managed to circumvent the bug by copying the $text
variable into another variable, just before the line with the two
substr() operations on $text, which was were the code was having
problems. After a while of successfully posting my edits without
knowing anything more about the problem, I noticed this might be a
more widespread problem when Wordpress started producing garbage HTML
on some strings, in other places, and went looking deeper.
I tried to find a way to maybe debug this but have no idea of how to
look at process memory in php, or what to look for. I have a test case
to submit but am unsure if I should file a bug or if I'm posting in
the right mailing list at all.
Any help is greatly appreciateed.
Best regards,
Tiago Marques
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