[LLVMdev] php crash

[Chris Lattner]

On Apr 3, 2009, at 8:12 AM, Xi Wang wrote:

> Hi,
>
> I was trying to build php using LLVM/Clang (trunk) on Mac OS X,  
> 10.5.6.
> http://downloads.php.net/johannes/php-5.3.0RC1.tar.bz2
>
> Apple gcc works.
>
> Clang generates a buggy executable.  under php source root,
> CC=clang ./configure --disable-all
> make
> make test
>
> The resulting `php' will crash, even with an empty php file.
>
> Argument strings on the stack at: c0000000
> 	./sapi/cli/php
> #0  0x00181daf in ZEND_RETURN_SPEC_CONST_HANDLER ()
> #1  0x00164db7 in execute ()
> #2  0x001436fd in zend_execute_scripts ()
> #3  0x000ee779 in php_execute_script ()
> #4  0x001c18c2 in main ()
>
> Clang works well when building php in debug mode.
> CC=clang ./configure --disable-all --enable-debug
>
> Is this a problem with the LLVM optimizer or the Clang front-end?   
> Thanks.

It is impossible to tell with this amount of detail.  Does it work  
correctly if you build with -O0 ?

-Chris