swprintf confusion

[RobRendell]

Hi! Thanks for open-sourcing Penumbra: Overture... I was finding it crashed a lot when I downloaded it from the Humble Indy Bundle, so the opportunity to find and fix the issue(s) is very satisfying... the game looks great, and I'm looking forward to playing it in full

I've found an issue that strikes me as odd. My debug build of Overture was failing to find/load any resources. I traced the problem into Impl/System/win32.cpp, where the function Platform::FindFileInDir makes a few calls to swprintf, e.g.:

swprintf(sSpec,256,_W("%s\\%s"),asDir.c_str(),asMask.c_str());

However, the version of swprintf my version of Visual Studio 2005 has doesn't take a size parameter... that's snwprintf. VS2005's swprint just takes the output string, format and args, without a size.

I've corrected them in my version and the game now loads and runs, but I don't really understand how this could have ever worked. Does swprintf sometimes take an "n" in some library versions or something?