Fixed bug #70237 (Empty while and do-while segmentation fault with opcode on CLI enabled).

NEWS

@@ -10,6 +10,10 @@ PHP                                                                        NEWS
   . Fixed bug #66606 (Sets HTTP_CONTENT_TYPE but not CONTENT_TYPE).
     (wusuopu, cmb)
 
+- Opcache:
+  . Fixed bug #70237 (Empty while and do-while segmentation fault with opcode
+    on CLI enabled). (Dmitry, Laruence)
+
 - Standard:
   . Fixed bug #70052 (getimagesize() fails for very large and very small WBMP).
     (cmb)

ext/opcache/Optimizer/block_pass.c

@@ -367,6 +367,10 @@ static inline void del_source(zend_code_block *from, zend_code_block *to)
 		return;
 	}
 
+	if (from == to) {
+		return;
+	}
+
 	while (*cs) {
 		if ((*cs)->from == from) {
 		 	DEL_SOURCE(cs);

ext/opcache/tests/bug70237.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Bug #70237 (Empty while and do-while segmentation fault with opcode on CLI enabled)
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+
+
+function neverUsed() {
+    $bool = false;
+    while ($bool) { };
+    //do { } while ($bool);
+}
+?>
+okey
+--EXPECT--
+okey