Compile sanitizer suppressions list and file bugs as necessary.

flow/layers/layer_tree.h

@@ -72,7 +72,7 @@ class LayerTree {
   }
 
  private:
-  SkISize frame_size_;  // Physical pixels.
+  SkISize frame_size_ = SkISize::MakeEmpty();  // Physical pixels.
   std::shared_ptr<Layer> root_layer_;
   fml::TimePoint build_start_;
   fml::TimePoint build_finish_;

testing/lsan_suppressions.txt

@@ -0,0 +1,42 @@
+# For more information on how to add additional suppressions here go to
+# https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer#suppressions
+
+# The Dart VM has incorrectly annotated false positives that we don't care
+# about.
+leak:dart::*
+
+# Objective-C class definitions are not leaks.
+leak:class_createInstance
+
+# SkSurfaces from Embedder backing stores may not be collected on engine
+# shutdown.
+# https://github.com/flutter/flutter/issues/42172
+leak:MakeSkSurfaceFromBackingStore
+
+# dispatch_once blocks don't cleanup their contents.
+leak:_dispatch_once_callout
+
+# Message loops in TLS slots may not be collected.
+# https://github.com/flutter/flutter/issues/42174
+leak:fml::MessageLoop::EnsureInitializedForCurrentThread
+
+# CFRunLoopSource in MessageLoopDarwin not being collected
+# https://github.com/flutter/flutter/issues/42175
+leak:wrap_dispatch_source_set_event_handler
+
+
+# Dispatched platform message that are not handled due to isolate death are
+# leaked.
+# https://github.com/flutter/flutter/issues/42176
+leak:flutter::PlatformViewEmbedder::HandlePlatformMessage
+
+# Service ID platform message is leaked in case the isolate dies before the
+# message is received by the the same.
+# https://github.com/flutter/flutter/issues/42178
+leak:flutter::Engine::Run(flutter::RunConfiguration)
+
+# Font families on are leaked when launching the shell.
+# https://github.com/flutter/flutter/issues/42179
+leak:txt::FontCollection::CreateMinikinFontFamily
+leak:CGFontCreateFontsWithURL
+leak:txt::GetDefaultFontFamily

testing/sanitizer_suppressions.sh

@@ -0,0 +1,16 @@
+CURRENT_DIRECTORY="$(pwd)/$(dirname "$0")"
+
+TSAN_SUPPRESSIONS_FILE="${CURRENT_DIRECTORY}/tsan_suppressions.txt"
+export TSAN_OPTIONS="suppressions=${TSAN_SUPPRESSIONS_FILE}"
+echo "Using Thread Sanitizer suppressions in ${TSAN_SUPPRESSIONS_FILE}"
+
+LSAN_SUPPRESSIONS_FILE="${CURRENT_DIRECTORY}/lsan_suppressions.txt"
+export LSAN_OPTIONS="suppressions=${LSAN_SUPPRESSIONS_FILE}"
+echo "Using Leak Sanitizer suppressions in ${LSAN_SUPPRESSIONS_FILE}"
+
+UBSAN_SUPPRESSIONS_FILE="${CURRENT_DIRECTORY}/ubsan_suppressions.txt"
+export UBSAN_OPTIONS="suppressions=${UBSAN_SUPPRESSIONS_FILE}"
+echo "Using Undefined Behavior suppressions in ${UBSAN_SUPPRESSIONS_FILE}"
+
+
+export ASAN_OPTIONS="detect_leaks=1"

testing/tsan_suppressions.txt

@@ -0,0 +1,14 @@
+# For more information on how to add additional suppressions here go to
+# https://github.com/google/sanitizers/wiki/ThreadSanitizerSuppressions
+
+# We don't care about errors from the Dart VM.
+race:dart::*
+
+# Data race on animator begin frame when the engine is shutting down.
+# https://github.com/flutter/flutter/issues/42190
+race:flutter::Shell::OnAnimatorBeginFrame
+race:flutter::Shell::OnAnimatorNotifyIdle
+
+# Data race in MessageLoopTaskQueues disposal.
+# https://github.com/flutter/flutter/issues/42192
+race:fml::MessageLoopTaskQueues::Dispose

testing/ubsan_suppressions.txt

@@ -0,0 +1,10 @@
+# For more information on how to add additional suppressions here go to
+# https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html#id13
+
+# Ignore errors is Dart VM.
+alignment:third_party/dart
+null:third_party/dart
+
+# Ignore errors in SwiftShader
+undefined:third_party/swiftshader
+