Hi.
I seem to have found the problem (it was in error in /var/log/apache2/error_log
- I was looking in /var/log/apache2/ssl_error_log)
[Thu Aug 21 20:17:42 2014] [notice] Apache/2.2.27 (Unix) DAV/2 mod_ssl/2.2.27 OpenSSL/1.0.1i SVN/1.8.9 PHP/5.5.15-pl0-gentoo configured -- resuming normal operations *** Error in `/usr/sbin/apache2': free(): invalid pointer: 0x0000000001197788 *** ======= Backtrace: ========= /lib64/libc.so.6(+0x78ff3)[0x7f0552158ff3] /lib64/libc.so.6(+0x7ebb6)[0x7f055215ebb6] /lib64/libc.so.6(+0x7fd92)[0x7f055215fd92] /usr/lib64/libmagic.so.1(+0x53d3)[0x7f054b0c53d3] /usr/lib64/apache2/modules/libphp5.so(finfo_resource_destructor+0x15)[0x7f054a428db5] /usr/lib64/apache2/modules/libphp5.so(list_entry_destructor+0x4e)[0x7f054a6b308e] /usr/lib64/apache2/modules/libphp5.so(zend_hash_del_key_or_index+0x28d)[0x7f054a6b0e5d] /usr/lib64/apache2/modules/libphp5.so(_zend_list_delete+0x61)[0x7f054a6b31a1] /usr/lib64/apache2/modules/libphp5.so(zif_finfo_close+0x59)[0x7f054a428d69]
I've filed a bug with Gentoo.