s

fixed `-Wlifetime-safety-intra-tu-suggestions` Clang warnings

disabled `-Wlifetime-safety-intra-tu-suggestions` Clang warning for now

Author: firewave

CMakeLists.txt

@@ -73,6 +73,13 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     add_compile_options_safe(-Wno-thread-safety-negative)
     add_compile_options_safe(-Wno-thread-safety-beta)
 
+    # TODO: check for proper AppleClang version
+    # we do not add the annotation until C++20
+    # the warning was introduced with Clang 23
+    if(CMAKE_CXX_STANDARD LESS 20)
+        add_compile_options_safe(-Wno-lifetime-safety-intra-tu-suggestions)
+    endif()
+
     # TODO: fix these?
     add_compile_options(-Wno-padded)
     add_compile_options(-Wno-sign-conversion)
@@ -83,6 +90,7 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     # we are not interested in these
     set_source_files_properties(test.cpp PROPERTIES COMPILE_FLAGS "-Wno-multichar -Wno-four-char-constants")
 
+    # TODO: check for proper AppleClang version
     if (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 14 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 14)
         # TODO: verify this regression still exists in clang-15
         if (CMAKE_BUILD_TYPE STREQUAL "Release" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")

simplecpp.h

@@ -45,6 +45,16 @@
 #  include <sys/types.h>
 #endif
 
+#if defined(__has_cpp_attribute)
+#  if __has_cpp_attribute (clang::lifetimebound)
+#    define SIMPLECPP_LIFETIMEBOUND [[clang::lifetimebound]]
+#  else
+#    define SIMPLECPP_LIFETIMEBOUND
+#  endif
+#else
+#  define SIMPLECPP_LIFETIMEBOUND
+#endif
+
 #if defined(_MSC_VER)
 #  pragma warning(push)
 // suppress warnings about "conversion from 'type1' to 'type2', possible loss of data"