Re: [ANN] Lua 5.2.2 (rc3) now available

[Joshua Jensen <josh.jjensen@...>]

----- Original Message -----
From: Roberto Ierusalimschy
Date: 3/15/2013 6:42 AM
> > And when linking (despite the Cxxxx code, I use /LTCG) I get this warning:
> >
> > ...\lua-5.2.2\src\loadlib.c(187) : warning C4700: uninitialized local
> > variable 'buffer' used
> Let us see:
>
>    char buffer[128];
>    if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
>        NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL))
>      lua_pushstring(L, buffer);
>
> MS documentation says 'buffer' is an _Out_ parameter [1]. What can we do?
>
>
> [1] http://msdn.microsoft.com/en-us/library/windows/desktop/ms679351%28v=vs.85%29.aspx
Generally, you can rid Visual Studio of this error by doing something like:

  char buffer[128];
+  buffer[0] = 0;
  if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,


-Josh