From e7cf25ce0efdf568fc8eaff249d49e46d5a6eda1 Mon Sep 17 00:00:00 2001
From: Matthias Baesken <mbaesken@openjdk.org>
Date: Wed, 16 Oct 2024 07:28:36 +0000
Subject: [PATCH] 8340801: Disable ubsan checks in some awt/2d coding

Reviewed-by: ihse, lucy, goetz, jwaters
---
 src/java.base/share/native/libjava/ub.h       | 42 +++++++++++++++++++
 .../share/native/libawt/java2d/loops/IntRgb.c |  3 ++
 2 files changed, 45 insertions(+)
 create mode 100644 src/java.base/share/native/libjava/ub.h

diff --git a/src/java.base/share/native/libjava/ub.h b/src/java.base/share/native/libjava/ub.h
new file mode 100644
index 00000000000..cf7f491ca45
--- /dev/null
+++ b/src/java.base/share/native/libjava/ub.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2024 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef _UB_H_
+#define _UB_H_
+
+/* ATTRIBUTE_NO_UBSAN - Function attribute which informs the compiler to disable UBSan checks in the
+ * following function or method.
+ */
+#ifdef UNDEFINED_BEHAVIOR_SANITIZER
+#if defined(__clang__) || defined(__GNUC__)
+#define ATTRIBUTE_NO_UBSAN __attribute__((no_sanitize("undefined")))
+#endif
+#endif
+
+#ifndef ATTRIBUTE_NO_UBSAN
+#define ATTRIBUTE_NO_UBSAN
+#endif
+
+#endif
diff --git a/src/java.desktop/share/native/libawt/java2d/loops/IntRgb.c b/src/java.desktop/share/native/libawt/java2d/loops/IntRgb.c
index 7155f70b472..aec11d17c89 100644
--- a/src/java.desktop/share/native/libawt/java2d/loops/IntRgb.c
+++ b/src/java.desktop/share/native/libawt/java2d/loops/IntRgb.c
@@ -34,6 +34,8 @@
 #include "ByteGray.h"
 #include "Index12Gray.h"
 
+#include "ub.h"
+
 /*
  * This file declares, registers, and defines the various graphics
  * primitive loops to manipulate surfaces of type "IntRgb".
@@ -166,6 +168,7 @@ DEFINE_ALPHA_MASKBLIT(IntArgbPre, IntRgb, 4ByteArgb)
 
 DEFINE_ALPHA_MASKBLIT(IntRgb, IntRgb, 4ByteArgb)
 
+ATTRIBUTE_NO_UBSAN
 DEFINE_SOLID_DRAWGLYPHLISTAA(IntRgb, 3ByteRgb)
 
 DEFINE_SOLID_DRAWGLYPHLISTLCD(IntRgb, 3ByteRgb)