com php-src: add info: empty strings are interned: UPGRADING.INTERNALS

Commit: 7f7c84d64f2cb6a1d8ac84d15788310eac580289 Author: Remi Collet <remi@php.net> Thu, 20 Mar 2014 15:18:41 +0100 Parents: e1fe76f28ae4d93306c53477968311924f83bb79 Branches: PHP-5.6 master Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=7f7c84d64f2cb6a1d8ac84d15788310eac580289 Log: add info: empty strings are interned Changed paths: M UPGRADING.INTERNALS Diff: diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS index e8e0982..474aed5 100644 --- a/UPGRADING.INTERNALS +++ b/UPGRADING.INTERNALS @@ -8,6 +8,7 @@ UPGRADE NOTES - PHP X.Y c. POST data handling d. Arginfo changes e. tsrm_virtual_cwd.h moved to zend_virtual_cwd.h + f. empty strings are interned 2. Build system changes a. Unix build system changes @@ -115,6 +116,13 @@ UPGRADE NOTES - PHP X.Y Memory allocation is now managed by emalloc/efree instead of malloc/free. + f. empty strings are interned + + String created using STR_EMPTY_ALLOC() are now interned. + convert_to_string use STR_EMPTY_ALLOC() for zval when IS_NULL. + STR_FREE() shoud be prefered as efree on such strings can raise memory corruption. + + ======================== 2. Build system changes ========================