Disable address sanitizer for uthread tests

Currently the sanitizer can't handle user thread properly.
See google/sanitizers#189 for details.
Close it temporarily to make CI sound.

async_simple/CMakeLists.txt

@@ -1,14 +1,20 @@
 file(GLOB coro_src "coro/*.cpp")
 file(GLOB executors_src "executors/*.cpp")
 
-if(UTHREAD)
+if(${UTHREAD})
   file(GLOB uthread_src "uthread/internal/*.cc")
-  # Compiler-rt15 enables new sanitizer option sanitize-address-use-after-return,
-  # But it can't take user thread well. So disable it for thread.cc as a workaround.
   if (CMAKE_BUILD_TYPE STREQUAL "Debug" AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND
       CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "13")
-    set_property(SOURCE ${uthread_src} PROPERTY COMPILE_FLAGS -fsanitize-address-use-after-return=never)
+    # The address sanitizer may produce false-positive results for swap-context.
+    # See https://github.com/google/sanitizers/issues/189 for details.
+    # FIXME: A proper fix may add a __asan_enter_fiber and __asan_exit_fiber
+    # for the user thread.
+    # FIXME2: the new added sanitize action: address-use-after-return
+    # can't handle stackful coroutine well too. So disable it as a workaround now.
+    set_property(SOURCE ${uthread_src} PROPERTY COMPILE_OPTIONS "-fno-sanitize=address;-fsanitize-address-use-after-return=never")
+    #endif()
   endif()
+
   if ("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "aarch64")
     file(GLOB uthread_asm_src "uthread/internal/aarch64/*arm64_aapcs_elf*")
   elseif ("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64")

async_simple/uthread/test/CMakeLists.txt

@@ -1,10 +1,14 @@
 file(GLOB uthread_test_src "*.cpp")
 
-# Compiler-rt15 enables new sanitizer option sanitize-address-use-after-return,
-# But it can't take user thread well. So disable it for thread.cc as a workaround.
 if (CMAKE_BUILD_TYPE STREQUAL "Debug" AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND
     CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "13")
-  set_property(SOURCE ${uthread_test_src} PROPERTY COMPILE_FLAGS -fsanitize-address-use-after-return=never)
+  # The address sanitizer may produce false-positive results for swap-context.
+  # See https://github.com/google/sanitizers/issues/189 for details.
+  # FIXME: A proper fix may add a __asan_enter_fiber and __asan_exit_fiber
+  # for the user thread.
+  # FIXME2: the new added sanitize action: address-use-after-return
+  # can't handle stackful coroutine well too. So disable it as a workaround now.
+  set_property(SOURCE ${uthread_test_src} PROPERTY COMPILE_OPTIONS "-fno-sanitize=address;-fsanitize-address-use-after-return=never")
 endif()
 
 add_executable(async_simple_uthread_test ${uthread_test_src} ${PROJECT_SOURCE_DIR}/async_simple/test/dotest.cpp)