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Date: Fri, 14 Sep 2012 04:40:13 -0700 (PDT)
Reply-To: x x <bapluda@yahoo.com.br>
To: "internals@lists.php.net" <internals@lists.php.net>
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Subject: Writing a PHP extension in C++, and memory leaks
From: bapluda@yahoo.com.br (x x)

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Is it safe to write PHP extensions in C++?=0AI read on Sara Golemon's book =
that the zend engine can bailout on a request during a call to php_error_do=
cref() or even an emaloc() that exceeds the allowed memory,=A0 doing an imm=
ediate longjmp() to the shutdown part of the engine.=0Alongjmp() does not w=
ork well with C++ destructors.=0AFor example:=0A[code]=0Avoid some_function=
( TSRMLS_D )=0A{=0A=A0Someclass obj( 3 );=0A=A0char *dst =3D emalloc(Moreth=
anscriptlimit);=0A=A0...=0A=A0=0Avoid some_function( TSRMLS_D )=0A{=0A=A0So=
meclass obj( 3 );=A0=0A=A0php_error_docref( NULL TSRMLS_CC, E_ERROR, "Some =
error" );=0A=A0...=0A[/code]=0Ain these two cases ~Someclass() may never be=
 invoked on obj, if either php_error_docref() or emalloc calls longjmp().=
=0A
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