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Hoernchen uploaded patch set #2 to this change.

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firmware: sniffer: fix ~INS procedure byte comparison

(~g_tpdu.packet[1]) == byte can never be true.
Unary ~ applies the integer promotions first,
so for tpdu INS = 0xA4 lhs should be 0x5B but as int
it gets zero extended to at least 16 bits and then flipped,
so it is 0xFFFFFF5B = -165, byte promotes to 0..255.

The ack was therefore dead code -> fallthrough to SW1
branch, fails 0x6x/0x9x test, TPDU gets flagged
SNIFF_DATA_FLAG_ERROR_MALFORMED from what I can tell.
But I am losing track of all these arcane issues to be honest.

Narrow the complement back to 8 bits.
Fyi this is unrelated to signedness and not specific to ARM.

Change-Id: I800f50ef35356429d07aa685ea919e70ec34946e
---
M firmware/libcommon/source/sniffer.c
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/simtrace2 refs/changes/29/43129/2

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Gerrit-MessageType: newpatchset
Gerrit-Project: simtrace2
Gerrit-Branch: master
Gerrit-Change-Id: I800f50ef35356429d07aa685ea919e70ec34946e
Gerrit-Change-Number: 43129
Gerrit-PatchSet: 2
Gerrit-Owner: Hoernchen <ewild@sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge@osmocom.org>
Gerrit-Reviewer: lynxis lazus <lynxis@fe80.eu>
Gerrit-Attention: lynxis lazus <lynxis@fe80.eu>