Gentoo bug: 423869
Thanks to hanno

--- pecl/crack/trunk/crack.c	2008/07/17 10:02:47	262854
+++ pecl/crack/trunk/crack.c	2012/06/07 16:13:34	326013
@@ -38,7 +38,7 @@
 
 /* {{{ crack_functions[]
  */
-function_entry crack_functions[] = {
+zend_function_entry crack_functions[] = {
 	PHP_FE(crack_opendict,			NULL)
 	PHP_FE(crack_closedict,			NULL)
 	PHP_FE(crack_check,				NULL)
@@ -94,6 +94,7 @@
 	int filename_len;
 	int result = SUCCESS;
 	
+#if PHP_VERSION_ID < 50400
 	if (PG(safe_mode)) {
 		filename_len = strlen(path) + 10;
 		filename = (char *) emalloc(filename_len);
@@ -125,6 +126,7 @@
 			return FAILURE;
 		}
 	}
+#endif
 	
 	if (php_check_open_basedir(path TSRMLS_CC)) {
 		return FAILURE;