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To: internals@lists.php.net
Date: Sat, 26 Jun 2004 03:39:53 -0700
Message-ID: <1088246393.30048.199219965@webmail.messagingengine.com>
Subject: issue in copying the hash table(Reposted second time)
From: kameshj@fastmail.fm ("Kamesh Jayachandran")

Hi All,
Sorry to repost. 
I want the clarification regarding copying the global_class_table to
thread specific compiler_globals->class_table in compiler_globals_ctor
in Zend/zend.c.

According to me memcpy should copy 'whatever source points to' to
'destination'.
Our class_table hashtable structure looks like this,
char *key;
zend_class_entry** value;
So memcpy should copy only whatever (zend_class_entry**) points to which
is semantically wrong good candidate for Segmentation fault.

No way memcpy can do double dereferencing for this case.

Somehow in Linux when i compile it with maintainer-zts-mode memcpy
copies the data fine.
I verified all the internal classes. Thread specific class_table is in
sink with the global_class_table.


Please clarify.

Thanks in Advance


With regards
Kamesh Jayachandran