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fix #H9082 - post-3.6.2 monster throwing crash

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Changing
  if (ammo_and_launcher(otmp, uwep) && mwep->otyp == ELVEN_BOW)
(with 'uwep' typo) to
  if (mwep->otyp == ELVEN_BOW && ammo_and_launcher(otmp, mwep))
(with fixed 'mwep') moved ammo_and_launcher()'s hidden non-null
test to after 'mwep->otyp'.  If mwep was Null (so monster must be
throwing non-ammo such as darts or daggers rather than shooting
with a launcher), a crash occurred.  (Throwing such things while
the monster is wielding any weapon doesn't have this problem.)

I don't think 3.6.2 can crash here.  If hero's uwep is a bow, otmp
must be arrows to get past pre-3.6.3's incorrect ammo_and_launcher()
check.  And a monster won't shoot arrows unless wielding a bow, so
monster's mwep would be non-Null regardless of what uwep is.

I tested a kobold with darts and an elven bow.  But I also gave it
one elven arrow to provoke it into wielding the bow and my test
didn't throw darts with nothing wielded....
This commit is contained in:
PatR
2019-08-02 10:42:26 -07:00
parent 31c8038344
commit 55e166ba08
2 changed files with 6 additions and 4 deletions
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4
doc/fixes36.3
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@@ -1,4 +1,4 @@
$NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.97 $ $NHDT-Date: 1564608120 2019/07/31 21:22:00 $
$NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.98 $ $NHDT-Date: 1564767725 2019/08/02 17:42:05 $
This fixes36.3 file is here to capture information about updates in the 3.6.x
lineage following the release of 3.6.2 in May 2019. Please note, however,
@@ -128,6 +128,8 @@ fix for feedback when a monster plays a fire horn at self to cure green slime
ended up being used for zapping a wand of fire at self too
wizard mode ^I "not carrying anything" still claimed "not carrying anything"
if "(all items are already identified)" was given
monster throwing from stack of missiles (darts, daggers, spears) would cause
crash if it wasn't wielding a weapon (bug in multi-shot shooting fix)
curses: sometimes the message window would show a blank line after a prompt
curses: the change to show map in columns 1..79 instead of 2..80 made the
highlight for '@' show up in the wrong place if clipped map had been