Fix backtraces with overridden zend_execute_ex

Author: nikic

Zend/tests/bug_debug_backtrace_replace_zend_execute_ex.phpt

@@ -0,0 +1,30 @@
+--TEST--
+bug_debug_backtrace.phpt with replaced zend_execute_ex
+--EXTENSIONS--
+zend_test
+--INI--
+zend_test.replace_zend_execute_ex=1
+--FILE--
+<?php
+function foo() {
+    bar();
+}
+
+function bar() {
+    boo();
+}
+
+function boo(){
+    debug_print_backtrace();
+}
+
+eval("foo();");
+
+echo "Done\n";
+?>
+--EXPECTF--
+#0 %s(%d): boo()
+#1 %s(%d): bar()
+#2 %s(%d) : eval()'d code(1): foo()
+#3 %s(%d): eval()
+Done

Zend/zend_builtin_functions.c

@@ -1820,7 +1820,7 @@ ZEND_API void zend_fetch_debug_backtrace(zval *return_value, int skip_last, int
 		zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &tmp);
 
 skip_frame:
-		if (UNEXPECTED((ZEND_CALL_INFO(call) & ZEND_CALL_TOP_FUNCTION) != 0)
+		if (UNEXPECTED(ZEND_CALL_KIND(call) == ZEND_CALL_TOP_FUNCTION)
 		 && !fake_frame
 		 && prev
 		 && prev->func