#30942 [Bgs]: imageCreateFromPng() gives fatal error

From: Date: Mon, 24 Jan 2005 13:24:49 +0000
Subject: #30942 [Bgs]: imageCreateFromPng() gives fatal error
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-72743@lists.php.net to get a copy of this message 
 ID:               30942
 User updated by:  hkh at netnords dot dk
 Reported By:      hkh at netnords dot dk
 Status:           Bogus
 Bug Type:         GD related
 Operating System: win XP
 PHP Version:      4.3.8
 Assigned To:      pajoye
 New Comment:

Maybe the png files not are valid, but still PHP should not crash
according to the manual who ways "returns an empty string on failure."


Previous Comments:
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[2005-01-24 09:46:42] pajoye@php.net

Not a developer issue. Fix your image conversion tool.


--Pierre

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[2004-12-02 13:36:04] pajoye@php.net

The fact is you will not be able to read these images without using
another libpng (1.0.6 and later), compiled with:
   #define PNG_SETJMP_NOT_SUPPORTED
   #define PNG_ABORT()

The png files are not valid.

The fix will be to change the error to a warning and return false.

--Pierre




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[2004-12-02 12:01:05] hkh at netnords dot dk

http://www.hanskejserhansen.dk/png/

I don't have the original pictures. They was saved from a homepage via
a browser (Don't know witch because i use four different) to my
harddesk.

I tried to find the original pictures, but now they are jpg's not
bmp's. sorry.

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[2004-12-02 11:35:38] pajoye@php.net

Please provide an url with these images please (if possible both bmp
and png).

--Pierre

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[2004-12-02 11:19:31] hkh at netnords dot dk

I found out witch pictures, who gives this error. It's png's created
with acdsee (used to convert bmp's to png's). I have experinced no
trouble with these png's in other programs.


I also found out, some of the png's gives a
<b>Fatal error</b>:  imagecreatefrompng(): gd-png:  fatal libpng error:
Too many IDAT's found


Run a phpinfo() who tells me
   GD Version  bundled (2.0.23 compatible)  


The ini file contains this
   extension=php_gd2.dll

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