build: suppress false-positive -Wstringop-overflow warnings with GCC LTO on Linux

GCC's alias analysis loses track of object sizes when small ref-counted
classes are inlined across translation units during LTO, triggering
spurious -Wstringop-overflow warnings on the atomic ref_count_ write.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: linesight

CMakeLists.txt

@@ -225,6 +225,7 @@ else()
     target_compile_options(${MODULE_NAME} PRIVATE
         -DNDEBUG -O3
         -flto -fdata-sections -ffunction-sections
+        -Wno-stringop-overflow
     )
     target_compile_definitions(${MODULE_NAME} PRIVATE
         BROWSER_PROCESS

src/client_handler/CMakeLists.txt

@@ -57,7 +57,7 @@ elseif(APPLE)
     target_compile_definitions(client_handler PRIVATE
         CEFPYTHON_API_H_FILE="cefpython_api_fixed.h")
 else()
-    target_compile_options(client_handler PRIVATE -DNDEBUG -O3)
+    target_compile_options(client_handler PRIVATE -DNDEBUG -O3 -Wno-stringop-overflow)
     target_compile_definitions(client_handler PRIVATE
         CEFPYTHON_API_H_FILE="cefpython_api_fixed.h")
 endif()

src/cpp_utils/CMakeLists.txt

@@ -24,7 +24,7 @@ elseif(APPLE)
     target_compile_definitions(cpp_utils PRIVATE
         CEFPYTHON_API_H_FILE="cefpython_api_fixed.h")
 else()
-    target_compile_options(cpp_utils PRIVATE -DNDEBUG -O3)
+    target_compile_options(cpp_utils PRIVATE -DNDEBUG -O3 -Wno-stringop-overflow)
     target_compile_definitions(cpp_utils PRIVATE
         CEFPYTHON_API_H_FILE="cefpython_api_fixed.h")
 endif()