php5 5.3.9 Segmentation Fault 11 in call to array_intersect

[iakoder]

Spoiler: This has the same root cause as ticket#31590. I'm only submitting this in case others run into clang-introduced segmentation faults running their own php code rather than just when installing php-related ports.

On a 64 bit lion machine

tracy-pc:~ dwilks$ uname -a
Darwin tracy-pc.win.intacct.com, intacct.com 11.2.0 Darwin Kernel Version 11.2.0: Tue Aug  9 20:54:00 PDT 2011; root:xnu-1699.24.8~1/RELEASE_X86_64 x86_64

In a reasonably fresh, clean, macports tree

tracy-pc:~ dwilks$ sudo port uninstall inactive
tracy-pc:~ dwilks$ sudo port -fp uninstall --follow-dependents installed
tracy-pc:~ dwilks$ sudo port clean all

With XCode 4.2 installed

With MacPorts configured to generate 32 bit binaries (not sure if this matters)

tracy-pc:~ dwilks$ grep build_arch /opt/local/etc/macports/macports.conf
build_arch			i386

Install php 5.3.9 (happened with the previous 5.3.8 too)

tracy-pc:~ dwilks$ sudo port install php5
--->  Computing dependencies for php5
--->  Dependencies to be installed: apache2 apr apr-util db46 expat libiconv gperf sqlite3 libedit ncurses ncursesw openssl zlib pcre bzip2 perl5 perl5.12 gdbm gettext perl5 perl5 autoconf213 gawk readline m4 gsed libtool automake autoconf help2man p5.12-locale-gettext libxml2 mhash pkgconfig glib2 libffi xz
...
--->  Staging php5 into destroot
Warning: php5 installs files outside the common directory structure.
--->  Installing php5 @5.3.9_0+apache2
--->  Activating php5 @5.3.9_0+apache2
You may need to update your php.ini for any changes that have been made
in this version of php. Compare /opt/local/etc/php5/php.ini with
/opt/local/etc/php5/php.ini-development (if this is a development server) or
/opt/local/etc/php5/php.ini-production (if this is a production server).

Create a simple php script that calls array_intersect

<?php
$arr1 = array('a', 'b');
$arr2 = array('c', 'd');
echo "about to call array_intersect\n";
if (array_intersect($arr1, $arr2)) {
    echo "Yes\n";
} else {
    echo "No\n";
}
echo "all done\n";

And execute it

tracy-pc:~ dwilks$ /opt/local/bin/php -n -f ~/test.php 
about to call array_intersect
Segmentation fault: 11
tracy-pc:~ dwilks$ 

Re-install php5 using llvm-gcc-4.2

tracy-pc:~ dwilks$ sudo port uninstall php5
Password:
--->  Deactivating php5 @5.3.9_0+apache2
--->  Cleaning php5
--->  Uninstalling php5 @5.3.9_0+apache2
--->  Cleaning php5
tracy-pc:~ dwilks$ sudo port clean php5
--->  Cleaning php5
tracy-pc:~ dwilks$ sudo port install php5 configure.compiler=llvm-gcc-4.2
--->  Computing dependencies for php5
--->  Fetching archive for php5
--->  Attempting to fetch php5-5.3.9_0+apache2.darwin_11.i386.tgz from http://packages.macports.org/php5
--->  Fetching php5
--->  Verifying checksum(s) for php5
--->  Extracting php5
--->  Applying patches to php5
--->  Configuring php5
--->  Building php5
--->  Staging php5 into destroot
Warning: php5 installs files outside the common directory structure.
--->  Installing php5 @5.3.9_0+apache2
--->  Activating php5 @5.3.9_0+apache2
You may need to update your php.ini for any changes that have been made
in this version of php. Compare /opt/local/etc/php5/php.ini with
/opt/local/etc/php5/php.ini-development (if this is a development server) or
/opt/local/etc/php5/php.ini-production (if this is a production server).

And then run the same test

tracy-pc:~ dwilks$ /opt/local/bin/php -n -f ~/test.php 
about to call array_intersect
No
all done

As a side note downloading php 5.3.9 and building from source worked perfectly since it uses gcc which points to llvm-gcc-4.2.