[Asterisk-code-review] Astobj2: Correctly treat hash fn returning INT MIN (asterisk[13])

[Ivan Poddubny]

Ivan Poddubny has uploaded a new patch set (#2).

Change subject: Astobj2: Correctly treat hash_fn returning INT_MIN
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Astobj2: Correctly treat hash_fn returning INT_MIN

The code in astobj2_hash.c wrongly assumed that abs(int) is always > 0.
However, abs(INT_MIN) = INT_MIN and is still negative, as well as
abs(INT_MIN) % num_buckets, and as a result this led to a crash.

One way to trigger the bug is using host=::80 or 0.0.0.128 in peer
configuration section in chan_sip or chan_iax.

This patch replaces usage of abs with casting to unsigned int for
calculating bucket number.

ASTERISK-25100 #close
Reported by: Mark Petersen

Change-Id: Id6981400ad526f47e10bcf7b847b62bd2785e899
---
M main/astobj2_hash.c
1 file changed, 5 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/31/531/2
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Id6981400ad526f47e10bcf7b847b62bd2785e899
Gerrit-PatchSet: 2
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Ivan Poddubny <ivan.poddubny at gmail.com>