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fix crash when a demo lump is empty

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Fixes #23
This commit is contained in:
Fabian Greffrath 2020-01-10 12:05:36 +01:00
parent c0c9c5e9c2
commit be3672b831
1 changed files with 13 additions and 0 deletions
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13
Source/g_game.c
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@ -1124,6 +1124,15 @@ static void G_DoPlayDemo(void)
demobuffer = demo_p = W_CacheLumpName (basename, PU_STATIC); // killough demobuffer = demo_p = W_CacheLumpName (basename, PU_STATIC); // killough
// [FG] ignore empty demo lumps
if (!demobuffer)
{
gameaction = ga_nothing;
demoplayback = true;
G_CheckDemoStatus();
return;
}
// killough 2/22/98, 2/28/98: autodetect old demos and act accordingly. // killough 2/22/98, 2/28/98: autodetect old demos and act accordingly.
// Old demos turn on demo_compatibility => compatibility; new demos load // Old demos turn on demo_compatibility => compatibility; new demos load
// compatibility flag, and other flags as well, as a part of the demo. // compatibility flag, and other flags as well, as a part of the demo.
@ -2508,7 +2517,11 @@ boolean G_CheckDemoStatus(void)
if (singledemo) if (singledemo)
exit(0); // killough exit(0); // killough
// [FG] ignore empty demo lumps
if (demobuffer)
{
Z_ChangeTag(demobuffer, PU_CACHE); Z_ChangeTag(demobuffer, PU_CACHE);
}
G_ReloadDefaults(); // killough 3/1/98 G_ReloadDefaults(); // killough 3/1/98
netgame = false; // killough 3/29/98 netgame = false; // killough 3/29/98
deathmatch = false; deathmatch = false;