Merge branch 'PHP-7.4'

cmb69 · cmb69 · commit dcbf020f76a2 · 2020-03-11T08:57:17.000+01:00
* PHP-7.4:
  Fix #79364: When copy empty array, next key is unspecified
diff --git a/Zend/tests/bug79364.phpt b/Zend/tests/bug79364.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Bug #79364 (When copy empty array, next key is unspecified)
+--FILE--
+<?php
+$a = [1, 2];
+unset($a[1], $a[0]);
+$b = $a;
+
+$a[] = 3;
+$b[] = 4;
+
+var_dump($a, $b);
+?>
+--EXPECT--
+array(1) {
+  [2]=>
+  int(3)
+}
+array(1) {
+  [2]=>
+  int(4)
+}
diff --git a/Zend/zend_hash.c b/Zend/zend_hash.c
@@ -2058,7 +2058,7 @@ ZEND_API HashTable* ZEND_FASTCALL zend_array_dup(HashTable *source)
 		target->nTableMask = HT_MIN_MASK;
 		target->nNumUsed = 0;
 		target->nNumOfElements = 0;
-		target->nNextFreeElement = ZEND_LONG_MIN;
+		target->nNextFreeElement = source->nNextFreeElement;
 		target->nInternalPointer = 0;
 		target->nTableSize = HT_MIN_SIZE;
 		HT_SET_DATA_ADDR(target, &uninitialized_bucket);
