(PHP 5.5.30) When trying to use xdebug and my extension, php during first RINIT without executing anything.

Program received signal SIGSEGV, Segmentation fault.

/lib/x86_64-linux-gnu/libc.so.6(+0x36eb0) [0x7fc25c258eb0]
/SpyTest/PHP/Compatibility/PHP_Runtime/PHP/lib/php/extensions/no-debug-non-zts-20121212/xdebug.so(xdebug_hash_extended_find+0x5b) [0x7fc255286e6b]
/SpyTest/PHP/Compatibility/PHP_Runtime/PHP/lib/php/extensions/no-debug-non-zts-20121212/xdebug.so(+0x1f5ad) [0x7fc2552875ad]
/SpyTest/PHP/Compatibility/PHP_Runtime/PHP/lib/php/extensions/no-debug-non-zts-20121212/xdebug.so(xdebug_profiler_function_user_end+0x15b) [0x7fc255287acb]
/SpyTest/PHP/Compatibility/PHP_Runtime/PHP/lib/php/extensions/no-debug-non-zts-20121212/xdebug.so(xdebug_execute_internal+0x308) [0x7fc255277d58]
php-fpm: pool www(zend_call_function+0xc8d) [0x76815d]
php-fpm: pool www(call_user_function_ex+0x5f) [0x76821f]
php-fpm: pool www(call_user_function+0x46) [0x768296]
...

the pseudocode in RINIT is:

zval rs_function_name, rs_function_ret;
INIT_ZVAL_STRING(rs_function_name, "register_shutdown_function");
CALL_PARAM rs_param[1];
CALL_PARAM_STRING(rs_param[0], "my_rshutdowncall");
if (call_user_function(EG(function_table), NULL, &rs_function_name, &rs_function_ret, 1, rs_param TSRMLS_CC) == SUCCESS) {
}
DTOR_ZVAL_PTR(&rs_function_name);
DTOR_ZVAL_PTR(&rs_function_ret);
zval_ptr_dtor(&rs_param[0]);