From d90d6c5d2bd4fb91c93ce7aa5460fcb50173b575 Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@php.net>
Date: Fri, 19 Aug 2005 08:11:16 +0000
Subject: [PATCH] nstanceof operator shouldn't call __autoload()

---
 NEWS                       |  1 +
 Zend/tests/instanceof.phpt | 18 ++++++++++++++++++
 Zend/zend_compile.c        | 11 ++++++++++-
 Zend/zend_compile.h        |  2 +-
 Zend/zend_execute_API.c    | 25 ++++++++++++++++++++-----
 5 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100755 Zend/tests/instanceof.phpt

diff --git a/NEWS b/NEWS
index c203bd5373..61becff453 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,7 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 6.0
 - Unicode support. (Andrei, Dmitriy, et al)
+- instanceof operator shouldn't call __autoload. (Dmitry)
 - cURL improvements: (Ilia)
   . Added curl_setopt_array() which allows setting of multiple cURL options.
   . Added CURLINFO_HEADER_OUT to facilitate request retrieval.
diff --git a/Zend/tests/instanceof.phpt b/Zend/tests/instanceof.phpt
new file mode 100755
index 0000000000..8bcbede999
--- /dev/null
+++ b/Zend/tests/instanceof.phpt
@@ -0,0 +1,18 @@
+--TEST--
+instanceof shouldn't call __autoload
+--FILE--
+<?php
+function __autoload($name) {
+	echo("AUTOLOAD '$name'\n");
+	eval("class $name {}");
+}
+
+class A {
+}
+$a = new A;
+var_dump($a instanceof B);
+var_dump($a instanceof A);
+?>
+--EXPECT--
+bool(false)
+bool(true)
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index 9e7303869c..21cf8f7774 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -3592,8 +3592,17 @@ void zend_do_isset_or_isempty(int type, znode *result, znode *variable TSRMLS_DC
 
 void zend_do_instanceof(znode *result, znode *expr, znode *class_znode, int type TSRMLS_DC)
 {
-	zend_op *opline = get_next_op(CG(active_op_array) TSRMLS_CC);
+	int last_op_number = get_next_op_number(CG(active_op_array));
+	zend_op *opline;
 
+	if (last_op_number > 0) {
+		opline = &CG(active_op_array)->opcodes[last_op_number-1];
+		if (opline->opcode == ZEND_FETCH_CLASS) {
+			opline->extended_value |= ZEND_FETCH_CLASS_NO_AUTOLOAD;
+		}
+	}
+	
+	opline = get_next_op(CG(active_op_array) TSRMLS_CC);
 	opline->opcode = ZEND_INSTANCEOF;
 	opline->result.op_type = IS_TMP_VAR;
 	opline->result.u.var = get_temporary_variable(CG(active_op_array));
diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index 8ddffd3be3..09877c4f47 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -597,7 +597,7 @@ int zendlex(znode *zendlval TSRMLS_DC);
 #define ZEND_FETCH_CLASS_GLOBAL		4
 #define ZEND_FETCH_CLASS_AUTO		5
 #define ZEND_FETCH_CLASS_INTERFACE	6
-
+#define ZEND_FETCH_CLASS_NO_AUTOLOAD 0x80
 
 /* variable parsing type (compile-time) */
 #define ZEND_PARSED_MEMBER				(1<<0)
diff --git a/Zend/zend_execute_API.c b/Zend/zend_execute_API.c
index 60dbed8241..88df2439f2 100644
--- a/Zend/zend_execute_API.c
+++ b/Zend/zend_execute_API.c
@@ -1421,7 +1421,9 @@ void zend_unset_timeout(TSRMLS_D)
 ZEND_API zend_class_entry *zend_u_fetch_class(zend_uchar type, void *class_name, uint class_name_len, int fetch_type TSRMLS_DC)
 {
 	zend_class_entry **pce;
+	zend_bool use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
 
+	fetch_type = fetch_type & ~ZEND_FETCH_CLASS_NO_AUTOLOAD;
 check_fetch_type:
 	switch (fetch_type) {
 		case ZEND_FETCH_CLASS_SELF:
@@ -1446,14 +1448,27 @@ check_fetch_type:
 			break;
 	}
 
-	if (zend_u_lookup_class(type, class_name, class_name_len, &pce TSRMLS_CC)==FAILURE) {
-		if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
-			zend_error(E_ERROR, "Interface '%R' not found", type, class_name);
+	if (use_autoload) {
+		if (zend_u_lookup_class(type, class_name, class_name_len, &pce TSRMLS_CC)==FAILURE) {
+			if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
+				zend_error(E_ERROR, "Interface '%R' not found", type, class_name);
+			} else {
+				zend_error(E_ERROR, "Class '%R' not found", type, class_name);
+			}
+		}
+		return *pce;
+	} else {
+		unsigned int lc_name_len;
+		void *lc_name = zend_u_str_case_fold(type, class_name, class_name_len, 1, &lc_name_len);
+
+		if (zend_u_hash_find(EG(class_table), type, lc_name, lc_name_len+1, (void **) &pce) == SUCCESS) {
+			efree(lc_name);
+			return *pce;
 		} else {
-			zend_error(E_ERROR, "Class '%R' not found", type, class_name);
+			efree(lc_name);
+			return NULL;
 		}
 	}
-	return *pce;
 }
 
 zend_class_entry *zend_fetch_class(char *class_name, uint class_name_len, int fetch_type TSRMLS_DC)
-- 
2.50.1