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fix github issue #731 - accessing freed memory \

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after charging causes a ring to explode

Reported by gebulmer:  if charging exploded a ring, the ring's memory
got freed but the stale pointer was passed to cap_spe() which accessed
it again.  Fix by setting the object pointer to Null after using up
the ring.  This was a post-3.6 bug.

Fixes #731
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PatR
2022-04-13 13:34:14 -07:00
parent 670b7edf1d
commit 9c2a5cbcb8
2 changed files with 2 additions and 1 deletions
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doc/fixes3-7-0.txt
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@@ -1146,6 +1146,7 @@ add '#tip' for containers to context-sensitive invent handling
sequencing confusion: picking an item when viewing inventory and picking an
action to do with it caused the inventory command to use time, then
on next turn the action was performed without taking any time
program would access freed memory if charging caused a ring to explode
curses: 'msg_window' option wasn't functional for curses unless the binary
also included tty support