Fixed bug #77498

I've renamed the function to the same name as the exported symbol
in master.

Author: nikic

NEWS

@@ -5,6 +5,8 @@ PHP                                                                        NEWS
 - Core:
   . Fixed bug #77494 (Disabling class causes segfault on member access).
     (Dmitry)
+  . Fixed bug #77498 (Custom extension Segmentation fault when declare static
+    property). (Nikita)
 
 - Mbstring:
   . Fixed bug #77514 (mb_ereg_replace() with trailing backslash adds null byte).

Zend/tests/inherit_internal_static.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Inherit internal static property into userland class
+--SKIPIF--
+<?php if (!extension_loaded('zend-test')) die('skip requires zend-test'); ?>
+--FILE--
+<?php
+
+class Test extends _ZendTestClass {
+}
+
+var_dump(Test::$_StaticProp);
+_ZendTestClass::$_StaticProp = 42;
+var_dump(Test::$_StaticProp);
+
+?>
+--EXPECT--
+NULL
+int(42)

Zend/zend_inheritance.c

@@ -894,6 +894,9 @@ ZEND_API void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent
 		}
 		if (UNEXPECTED(parent_ce->type != ce->type)) {
 			/* User class extends internal */
+			if (CE_STATIC_MEMBERS(parent_ce) == NULL) {
+				zend_class_init_statics(parent_ce);
+			}
 			if (UNEXPECTED(zend_update_class_constants(parent_ce) != SUCCESS)) {
 				ZEND_ASSERT(0);
 			}

Zend/zend_object_handlers.c

@@ -1374,14 +1374,14 @@ ZEND_API zend_function *zend_std_get_static_method(zend_class_entry *ce, zend_st
 }
 /* }}} */
 
-static void zend_intenal_class_init_statics(zend_class_entry *class_type) /* {{{ */
+ZEND_API void zend_class_init_statics(zend_class_entry *class_type) /* {{{ */
 {
 	int i;
 	zval *p;
 
 	if (!CE_STATIC_MEMBERS(class_type) && class_type->default_static_members_count) {
 		if (class_type->parent) {
-			zend_intenal_class_init_statics(class_type->parent);
+			zend_class_init_statics(class_type->parent);
 		}
 
 #if ZTS
@@ -1431,7 +1431,7 @@ ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *p
 	/* check if static properties were destoyed */
 	if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL)) {
 		if (ce->type == ZEND_INTERNAL_CLASS) {
-			zend_intenal_class_init_statics(ce);
+			zend_class_init_statics(ce);
 		} else {
 undeclared_property:
 			if (!silent) {

Zend/zend_object_handlers.h

@@ -175,6 +175,7 @@ extern const ZEND_API zend_object_handlers std_object_handlers;
 #define ZEND_PROPERTY_NOT_EMPTY ZEND_ISEMPTY /* Property is not empty */
 #define ZEND_PROPERTY_EXISTS    0x2          /* Property exists */
 
+ZEND_API void zend_class_init_statics(zend_class_entry *ce);
 ZEND_API zend_function *zend_std_get_static_method(zend_class_entry *ce, zend_string *function_name_strval, const zval *key);
 ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *property_name, zend_bool silent);
 ZEND_API ZEND_COLD zend_bool zend_std_unset_static_property(zend_class_entry *ce, zend_string *property_name);