From f1dcd46a9b8e9c665ccd4c2c07ba1497683ac001 Mon Sep 17 00:00:00 2001
From: Henrik Kjellander <kjellander@webrtc.org>
Date: Tue, 27 Oct 2015 15:31:45 +0100
Subject: [PATCH] UBSan: Add blacklist files for WebRTC standalone.

For more info, see
http://dev.chromium.org/developers/testing/undefinedbehaviorsanitizer

BUG=webrtc:5124
TESTED=Passing compilation using:
GYP_DEFINES="ubsan=1" webrtc/build/gyp_webrtc && ninja -C out/Release
GYP_DEFINES="ubsan_vptr=1" webrtc/build/gyp_webrtc && ninja -C out/Release
R=pbos@webrtc.org

Review URL: https://codereview.webrtc.org/1418213005 .

Cr-Commit-Position: refs/heads/master@{#10429}
---
 tools/ubsan/OWNERS             |  2 ++
 tools/ubsan/blacklist.txt      | 15 +++++++++++++++
 tools/ubsan/vptr_blacklist.txt | 22 ++++++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 tools/ubsan/OWNERS
 create mode 100644 tools/ubsan/blacklist.txt
 create mode 100644 tools/ubsan/vptr_blacklist.txt

diff --git a/tools/ubsan/OWNERS b/tools/ubsan/OWNERS
new file mode 100644
index 0000000000..25eae571ce
--- /dev/null
+++ b/tools/ubsan/OWNERS
@@ -0,0 +1,2 @@
+pbos@webrtc.org
+kjellander@webrtc.org
diff --git a/tools/ubsan/blacklist.txt b/tools/ubsan/blacklist.txt
new file mode 100644
index 0000000000..8bcb29073b
--- /dev/null
+++ b/tools/ubsan/blacklist.txt
@@ -0,0 +1,15 @@
+#############################################################################
+# UBSan blacklist.
+# Please think twice before you add or remove these rules.
+
+# This is a stripped down copy of Chromium's blacklist.txt, to enable
+# adding WebRTC-specific blacklist entries.
+
+#############################################################################
+# YASM does some funny things that UBsan doesn't like.
+# https://crbug.com/489901
+src:*/third_party/yasm/*
+
+#############################################################################
+# Ignore system libraries.
+src:*/usr/*
diff --git a/tools/ubsan/vptr_blacklist.txt b/tools/ubsan/vptr_blacklist.txt
new file mode 100644
index 0000000000..02adc84630
--- /dev/null
+++ b/tools/ubsan/vptr_blacklist.txt
@@ -0,0 +1,22 @@
+#############################################################################
+# UBSan vptr blacklist.
+# Function and type based blacklisting use a mangled name, and it is especially
+# tricky to represent C++ types. For now, any possible changes by name manglings
+# are simply represented as wildcard expressions of regexp, and thus it might be
+# over-blacklisted.
+#
+# Please think twice before you add or remove these rules.
+#
+# This is a stripped down copy of Chromium's vptr_blacklist.txt, to enable
+# adding WebRTC-specific blacklist entries.
+
+#############################################################################
+# Using raw pointer values.
+#
+# A raw pointer value (16) is used to infer the field offset by
+# GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET.
+
+src:*/third_party/protobuf/src/google/protobuf/compiler/plugin.pb.cc
+src:*/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_message.cc
+src:*/third_party/protobuf/src/google/protobuf/descriptor.pb.cc
+