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PF_traceline causes program to die badly if given non-numeric (isnan) vectors. So we must check to not allow this happening. Additionally, stop program execution is developer cvar is set. Note: Compiling program with gcc option \'-ffast-math\' (and more specifically, -funsafe-math-optimizations) is an alternative fix than this patch. It performs FPU opts that gloss over the issue

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git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@268 af15c1b1-3010-417e-b628-4374ebc0bcbd
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Steven 2010-08-14 03:59:29 +00:00
parent 2ec27d0df8
commit f528bdb8a1
1 changed files with 13 additions and 0 deletions
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13
Quake/pr_cmds.c
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@ -658,6 +658,19 @@ void PF_traceline (void)
nomonsters = G_FLOAT(OFS_PARM2);
ent = G_EDICT(OFS_PARM3);
if (developer.value) {
if (isnan(v1[0]) || isnan(v1[1]) || isnan(v1[2]) ||
isnan(v2[0]) || isnan(v2[1]) || isnan(v2[2]))
{
Host_Error("NAN in traceline:\nv1(%f %f %f) v2(%f %f %f)\nentity %d",
v1[0], v1[1], v1[2], v2[0], v2[1], v2[2], EDICT_TO_PROG(ent));
}
} else {
if (isnan(v1[0]) || isnan(v1[1]) || isnan(v1[2]))
v1[0] = v1[1] = v1[2] = 0;
if (isnan(v2[0]) || isnan(v2[1]) || isnan(v2[2]))
v2[0] = v2[1] = v2[2] = 0;
}
trace = SV_Move (v1, vec3_origin, vec3_origin, v2, nomonsters, ent);
pr_global_struct->trace_allsolid = trace.allsolid;