Fixed assertion on phpMyAdmin-4.7.5 home page

NEWS

@@ -16,6 +16,9 @@ PHP                                                                        NEWS
   . Fixed bug #75434 (Wrong reflection for mysqli_fetch_all function). (Fabien
     Villepinte)
 
+- Opcache:
+  . Fixed assertion on phpMyAdmin-4.7.5 home page. (Dmitry)
+
 - SOAP:
   . Fixed bug #75464 (Wrong reflection on SoapClient::__setSoapHeaders). (villfa)
 

ext/opcache/Optimizer/zend_ssa.c

@@ -1279,7 +1279,11 @@ static inline void zend_ssa_remove_phi_source(zend_ssa *ssa, zend_ssa_phi *phi,
 	for (j = 0; j < predecessors_count; j++) {
 		if (phi->sources[j] == var_num) {
 			if (j < pred_offset) {
-				ZEND_ASSERT(phi->use_chains[pred_offset] == NULL);
+				if (next_phi == NULL) {
+					next_phi = phi->use_chains[pred_offset];
+				} else {
+					ZEND_ASSERT(phi->use_chains[pred_offset] == NULL);
+				}
 			} else if (j >= pred_offset) {
 				phi->use_chains[j] = next_phi;
 			}

ext/opcache/tests/ssa_bug_010.phpt

@@ -0,0 +1,32 @@
+--TEST--
+Wrong assertion
+--FILE--
+<?php
+function foo($parts, $a, $b) {
+  $name = $a;
+  $level = 1;
+  foreach ($parts as $part) {
+    if ($level == 1) {
+      $level = 4;
+      $found = true;
+      switch ($part) {
+        case 'general':
+          break;
+        case 'bg':
+          $name = $b;
+          break;
+      }
+      if ($found) {
+        continue;
+      }
+    }
+    if ($level == 2) {
+      continue;
+    }
+  }
+  return $name;
+}
+?>
+OK
+--EXPECT--
+OK