- The MacToolChain will emit dSYMs and strip executables when the UBT configuration enables bGeneratedSYMFile, just like iOS.
- Symbol stripping requires generating dSYMs to prevent creation of non-debuggable builds whose crash reports would be unresolvable.
- To avoid a dependency on the Private framework CoreSymbolication all symbols from that framework are loaded dynamically & can only be used within programs, not the game or the editor, as CoreSymbolication is incompatible with non-ANSI malloc implementations.
- Added an initial platform-agnostic API for querying debug symbol info, including a generic database format that can be queried on otherwise incompatible platforms.
- Added UnrealAtoS that emulates Apple's atos to resolve symbols using the generic database or the platform API (CoreSymbolication on OS X) which on OS X is used by the editor to gather symbol info for CodeView.
- Added DSymExporter which will export Apple debug symbol data from Mach-O binaries, including the payload within a .dSYM bundle, to the generic format so that the crash report server may one day read the data without needing a Mac to symbolicate reports.
- Initial SymbolDebugger & MinidumpDiagnostics support on OS X.
#codereview michael.trepka, Jaroslaw.Surowiec, lee.clark, peter.sauerbrei
[CL 2466299 by Mark Satterthwaite in Main branch]
We've changed the way vtable ptr are obtained for UClasses. Right now we use special empty constructor to get it, so we don't have to use normal one which was causing troubles. This special vtable helper constructor is generated automatically for most cases, but sometimes it's not possible (e.g. no default constructor for members types). In such case there is a possibility to override that generated constructor and write a custom one. The signature is UCustomClass::UCustomClass(FVTableHelper& Helper) and it needs to call base class'es constructor with the same parameter. Please do not use these constructors for anything else. There is no guarantee the object will be in correct state after calling this.
You can still disable this functionality if something breaks, just set WITH_HOT_RELOAD_CTORS to 0.
[CL 2466152 by Jaroslaw Palczynski in Main branch]
