Edit report at https://bugs.php.net/bug.php?id=55673&edit=1
ID: 55673
Updated by: larue...@php.net
Reported by: der...@php.net
Summary: Compiler creates (unused) compiled variables for
self::$foo
Status: Assigned
Type: Bug
Package: Scripting Engine problem
Operating System: *
PHP Version: 5.3SVN-2011-09-12 (SVN)
Assigned To: dmitry
Block user comment: N
Private report: N
New Comment:
OOPS!, I must lost my mind, what I was doing is erease NOP opline(god know How
can I read this bug as "REMOVE UNUSED NOP" opline)....
sorry, but maybe this patch is also a litte useful...
Previous Comments:
------------------------------------------------------------------------
[2011-09-14 15:10:14] larue...@php.net
I have made a patch for this, and make whole test after patched. made sure that
there is no new test failed after patched.
TEST RESULT:
trunk: http://pastebin.com/gMYc2Fp5
5.4branch: http://pastebin.com/7EePEE43
5.3branch: http://pastebin.com/m4wirXjr
------------------------------------------------------------------------
[2011-09-14 15:07:01] larue...@php.net
The following patch has been added/updated:
Patch Name: bug55673.diff
Revision: 1316012821
URL:
https://bugs.php.net/patch-display.php?bug=55673&patch=bug55673.diff&revision=1316012821
------------------------------------------------------------------------
[2011-09-14 14:37:02] larue...@php.net
after a quick digging, I found this is caused by zend_do_early_binding, which
make
the declare_class to NOP after use it.
I will try to make a patch for this.
------------------------------------------------------------------------
[2011-09-12 13:47:48] der...@php.net
Description:
------------
When having the following code:
<?php
class foo {
function bar() {
self::$bar = 42;
}
}
?>
The compiler generates compiled variable !0 for $bar, even though it's a class
variable:
derick@whisky:/tmp$ php -dvld.active=1 -r 'class foo { function bar() {
self::$bar = 42; } }'
Finding entry points
Branch analysis from position: 0
Return found
filename: Command line code
function name: (null)
number of ops: 2
compiled vars: none
line # * op fetch ext return operands
---------------------------------------------------------------------------------
1 0 > NOP
1 > RETURN null
branch: # 0; line: 1- 1; sop: 0; eop: 1
path #1: 0,
Class foo:
Function bar:
Finding entry points
Branch analysis from position: 0
Return found
filename: Command line code
function name: bar
number of ops: 4
compiled vars: !0 = $bar
line # * op fetch ext return operands
---------------------------------------------------------------------------------
0 > ZEND_FETCH_CLASS 1
1 FETCH_W static member $1 'bar'
2 ASSIGN $1, 42
3 > RETURN null
branch: # 0; line: 1- 1; sop: 0; eop: 3
path #1: 0,
End of function bar.
End of class foo.
14:41 <@Derick> dmitry: I am wondering why self::$foo creates a compiled
variable. Any idea?
14:42 <@Derick> dmitry: it creates it, but it's never used
14:44 <@dmitry> I see. It's probably because od simple one-pass compiler that
first interpret $foo as local variable and only then as a class variable :)
14:44 <@Derick> dmitry: any way we can fix that perhaps?
14:44 <@dmitry> Derick: could you please create a bug and assign it to me
14:44 <@Derick> yes, sure
------------------------------------------------------------------------
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