4b04b1e6ac
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)
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* NetHack 3.7 vmsmisc.c $NHDT-Date: 1596498308 2020/08/03 23:45:08 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.12 $ */
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/* Copyright (c) 2011 by Robert Patrick Rankin */
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/* NetHack may be freely redistributed. See license for details. */
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#include "config.h"
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#undef exit
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#include <ssdef.h>
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#include <stsdef.h>
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int debuggable = 0; /* 1 if we can debug or show a call trace */
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ATTRNORETURN void vms_exit(int);
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ATTRNORETURN void vms_abort(void);
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/* first arg should be unsigned long but <lib$routines.h> has unsigned int */
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extern void VDECL(lib$signal, (unsigned, ...));
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/* terminate, converting Unix-style exit code into VMS status code */
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ATTRNORETURN void
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vms_exit(int status)
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{
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/* convert non-zero to failure, zero to success */
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exit(status ? (SS$_ABORT | STS$M_INHIB_MSG) : SS$_NORMAL);
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/* NOT REACHED */
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}
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/* put the user into the debugger; used for abort() when in wizard mode */
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ATTRNORETURN void
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vms_abort(void)
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{
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if (debuggable)
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lib$signal(SS$_DEBUG);
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/* we'll get here if the debugger isn't available, or if the user
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uses GO to resume execution instead of EXIT to quit */
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vms_exit(2); /* don't return to caller (2==arbitrary non-zero) */
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/* NOT REACHED */
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}
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/*
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* Caveat: the VERYOLD_VMS configuration hasn't been tested in many years.
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*/
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#ifdef VERYOLD_VMS
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#include "oldcrtl.c"
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#endif
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/*vmsmisc.c*/
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