8000 Fix some undefined behaviour in some maintainer mode code (#14891) by jsteemann · Pull Request #18372 · arangodb/arangodb · GitHub
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Fix some undefined behaviour in some maintainer mode code (#14891) #18372

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Merged
merged 1 commit into from
Mar 17, 2023
Merged

Fix some undefined behaviour in some maintainer mode code (#14891) #18372

merged 1 commit into from
Mar 17, 2023

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jsteemann
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Scope & Purpose

Backport of #14891

This is a trivial bug fix for a corner case.

If in maintainer mode, or if the log topic AgencyComm is set to DEBUG
or TRACE mode, and all agents are gone, then the first element of
an empty deque is dereferenced. With STL debugging on this leads to
a crash.

  • 💩 Bugfix
  • 🍕 New feature
  • 🔥 Performance improvement
  • 🔨 Refactoring/simplification

Checklist

Related Information

  • Docs PR:
  • Enterprise PR:
  • GitHub issue / Jira ticket:
  • Design document:

@jsteemann jsteemann added this to the 3.8 milestone Mar 17, 2023
@cla-bot cla-bot bot added the cla-signed label Mar 17, 2023
@jsteemann jsteemann mentioned this pull request Mar 17, 2023
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Dronplane
Dronplane approved these changes Mar 17, 2023
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@Dronplane Dronplane left a comment

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LGTM

@KVS85 KVS85 merged commit 722ea18 into 3.8 Mar 17, 2023
@KVS85 KVS85 deleted the bug-fix-3.8/undefined-behaviour-in-debug-log-message branch March 17, 2023 20:50
neunhoef
neunhoef reviewed Mar 19, 2023
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LGTM

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@neunhoef neunhoef neunhoef left review comments

@dothebart dothebart dothebart approved these changes

@Dronplane Dronplane Dronplane approved these changes

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@jsteemann jsteemann

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