diff --git a/ext/bcmath/bcmath.c b/ext/bcmath/bcmath.c
index 2e9cb6c3ad7..df2b96e68a7 100644
--- a/ext/bcmath/bcmath.c
+++ b/ext/bcmath/bcmath.c
@@ -991,6 +991,12 @@ static zval *bcmath_number_read_property(zend_object *obj, zend_string *name, in
 	return zend_std_read_property(obj, name, type, cache_slot, rv);
 }
 
+static zval *bcmath_number_get_property_ptr_ptr(zend_object *object, zend_string *member, int type, void **cache_slot)
+{
+	/* Must always go through read property because all properties are virtual, and no dynamic properties are allowed. */
+	return NULL;
+}
+
 static int bcmath_number_has_property(zend_object *obj, zend_string *name, int check_empty, void **cache_slot)
 {
 	if (check_empty == ZEND_PROPERTY_NOT_EMPTY) {
@@ -1034,6 +1040,7 @@ static void bcmath_number_register_class(void)
 	bcmath_number_obj_handlers.unset_property = bcmath_number_unset_property;
 	bcmath_number_obj_handlers.has_property = bcmath_number_has_property;
 	bcmath_number_obj_handlers.read_property = bcmath_number_read_property;
+	bcmath_number_obj_handlers.get_property_ptr_ptr = bcmath_number_get_property_ptr_ptr;
 	bcmath_number_obj_handlers.get_properties_for = bcmath_number_get_properties_for;
 	bcmath_number_obj_handlers.cast_object = bcmath_number_cast_object;
 }
diff --git a/ext/bcmath/tests/number/gh18641.phpt b/ext/bcmath/tests/number/gh18641.phpt
new file mode 100644
index 00000000000..ed8f55e9145
--- /dev/null
+++ b/ext/bcmath/tests/number/gh18641.phpt
@@ -0,0 +1,13 @@
+--TEST--
+GH-18641 (Accessing a BcMath\Number property by ref crashes)
+--EXTENSIONS--
+bcmath
+--FILE--
+<?php
+$a = new BCMath\Number("1");
+$fusion = $a;
+$x = &$fusion->value;
+var_dump($x);
+?>
+--EXPECT--
+string(1) "1"
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 30f84d61002..d2929218569 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -473,13 +473,14 @@ char **php_readline_completion_cb(const char *text, int start, int end)
 				/* libedit will read matches[2] */
 				matches = calloc(3, sizeof(char *));
 				if (!matches) {
-					return NULL;
+					goto out;
 				}
 				matches[0] = strdup("");
 			}
 		}
 	}
 
+out:
 	zval_ptr_dtor(&params[0]);
 	zval_ptr_dtor(&_readline_array);