fix: turn warnings into errors (#1425)

* Update PlayerContainer.cpp

fix: turn warnings into errors

for the few warnings we get, at least make sure we listen to them now on unix platforms.  Windows has too many right now to enable /WX

resolve warning

actually fix it

Update CMakeLists.txt

* detour pls

* Update CMakeLists.txt

* I HAVE 20 DOLLARS AND I NEED A WII GAME FOR MY KID

* I HAVE 0 DOLLARS NOW

* don't look don't look

* Revert "don't look don't look"

This reverts commit 5603eb5980.

* Revert "Revert "don't look don't look""

This reverts commit a334832a4d.

* could it be

* we found one (but its already reported)

not resolved yet though.

* Revert "don't look don't look"

This reverts commit 5603eb5980.

* ignore warning for file

* another one

* Update .gitmodules

* comments

dGame/dInventory/CMakeLists.txt

@@ -5,5 +5,11 @@ set(DGAME_DINVENTORY_SOURCES
 	"ItemSet.cpp"
 	"ItemSetPassiveAbility.cpp")
 
+# Workaround for compiler bug where the optimized code could result in a memcpy of 0 bytes, even though that isnt possible.
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97185
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+	set_source_files_properties("Item.cpp" PROPERTIES COMPILE_FLAGS "-Wno-stringop-overflow")
+endif()
+
 add_library(dInventory STATIC ${DGAME_DINVENTORY_SOURCES})
 target_precompile_headers(dInventory REUSE_FROM dGameBase)