The pull request from argrath would have moved the definition of
VDECL from tradstdc.h to vmsconf.h because some out of date references
to it in sys/vms/*.c were the only place it still appeared to be used.
Instead of applying that, remove those old references.
NetHack 3.7.x requires C99 so just remove VDECL since it was present
in order to support pre-ANSI compilers. (There is at least one
comment that still mentions it though.)
This also gets rid of another chunk of tradstdc.h that was allowing
either pre-ANSI or nearly-ANSI compilers to deal with nethack's old
code. I left the USE_STDARG/USE_VARARGS/USE_OLDARGS stuff in place
even though anything supporting C99 shouldn't need that. Some or
all of the [UN]WIDENED_PROTOTYPES stuff is still there too.
Closes#1030
Although gcc specifies support for declaring a function as
noreturn after the function name and parameters, other compilers
do so via an attribute at the start of the declaration. Add some
macro support for the attribute-at-the-beginning method:
o MS Visual Studio compiler
o Upcoming C23 standard (untested at this point)
I'll push a formatting guide at some point. There may still be
outstanding changes, but please feel free to resolve those as you arrive
a them.
To the best of my knowledge, there is no changes to the actual code
content, but the formatter does have the occasional bug. If you run into
an issue, please fix it!
The preliminary implementation of PANICTRACE on VMS had a "Fixme"
that this fixes, and a "TODO" that this makes moot, but the main reason
for this patch is that vmsmisc.c had been changed to call vms_define(),
which resides in vmsunix.c. Since vmsmisc.obj is linked into progarms
in util/ and vmsunix.obj isn't, enabling PANICTRACE caused linking
problems for those. This moves the code that wants to call vms_define()
into vmsunix.c (despite the fact that it's not even vaguely related to
Unix emulation), so that it only matters to nethack and doesn't impact
the utility programs anymore.
This uses a VMS facility called LIB$INITIALIZE to call code before
main() starts. It's rather messy--at least when written in something
other than assembler or Bliss--and shouldn't be needed for nethack,
but I couldn't figure out how to trap the condition signalled by
lib$signal(SS$_DEBUG) when the debugger isn't available to do so, so I
needed a way to make issuing that signal be conditional upon debugger
availability. One of the arguments passed to LIB$INITIALIZE-invoked
routines contains information that makes if feasible to deduce whether
the debugger is available.
Even when PANICTRACE is disabled, that's useful for handling abort
due to panic while in running in wizard mode.
I don't think this is useful enough to recommend ordinary users
enable it, but it's close enough to being useful that I don't want
to leave it to become subject to bit rot like umpteen other unfinished
patches. Anyone running in wizard mode who has a panic already gets
pushed into the debugger on VMS, although it doesn't work for what might
be considered the most important configuration (a secure playground, as
opposed to the wide-open one I've always been content to leave mine at).
