Description:
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I got php crashed when running 'phpinfo()' command with imagick.so enabled.

It fails both running as Apache2.2 module and in command line with 

php -r 'phpinfo();'

The failure message is:

php in free(): error: junk pointer, too high to make sense
Abort trap: 6 (core dumped)

PHP ver: 5.2.4 (not 5.2.1 as I was forced to choose in 'select' box of bugreport interface - there's no 5.2.4 option)
pecl-imagick ver: 2.0.1
ImageMagick library version: ImageMagick-nox11-6.3.5.10_1
All php extensions disabled, but imagick.so

ImageMagick library is compiled with the following options enabled:
WITHOUT_X11=true                                           
WITHOUT_IMAGEMAGICK_TESTS=true                   
WITHOUT_IMAGEMAGICK_PERL=true                     
WITHOUT_IMAGEMAGICK_MODULES=true             
WITHOUT_IMAGEMAGICK_BZLIB=true                 
WITHOUT_IMAGEMAGICK_16BIT_PIXEL=true 
WITHOUT_IMAGEMAGICK_DJVU=true               
WITHOUT_IMAGEMAGICK_LCMS=true                      
WITH_IMAGEMAGICK_TTF=true                              
WITHOUT_IMAGEMAGICK_FONTCONFIG=true    
WITH_IMAGEMAGICK_JPEG=true                      
WITHOUT_IMAGEMAGICK_OPENEXR=true             
WITH_IMAGEMAGICK_PNG=true                           
WITHOUT_IMAGEMAGICK_TIFF=true                      
WITHOUT_IMAGEMAGICK_FPX=true                        
WITHOUT_IMAGEMAGICK_JBIG=true                      
WITHOUT_IMAGEMAGICK_JPEG2000=true          
WITHOUT_IMAGEMAGICK_DOT=true                    
WITHOUT_IMAGEMAGICK_WMF=true                         
WITHOUT_IMAGEMAGICK_SVG=true                         
WITHOUT_IMAGEMAGICK_PDF=true                         
WITHOUT_IMAGEMAGICK_MPEG2=true                   
WITHOUT_IMAGEMAGICK_GSLIB=true

I had the same issue with imagick 0.9.13

I think it's the same bug as http://pecl.php.net/bugs/bug.php?id=6488
Not sure if I'm doing right thing reposting it here, but the goal besides the report itself was to warn all people going to download imagick looking into empty 'bugs' section. People see no bugs, but bugs exist actually (at least this one). I have this bug in conditions different from bug #6488 and with latest 'stable' version of both php and imagick extension. 

Some guy here http://pecl.php.net/bugs/bug.php?id=6488 recommends compiling ImageMagick with --enable-embeddable, but it doesn't help, just chages error message to:

Assertion failed:
((SizeOfBlock(memory) % (4*sizeof(size_t))) == 0), function
RelinquishMagickMemory, file magick/memory.c, line 591


Reproduce code:
---------------
php -r 'phpinfo();'

Expected result:
----------------
full and valid phpinfo() output

Actual result:
--------------
partial phpinfo() output, broken somewhere in the middle, finished with this message:

php in free(): error: junk pointer, too high to make sense
Abort trap: 6 (core dumped)