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[[!meta copyright="Copyright © 2012 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
Quoting from `hurd/hurd/signal.h`:
> A *critical section* is a section of code which cannot safely be interrupted
> to run a [[signal handler|signal]]; for example, code that holds any lock
> cannot be interrupted lest the signal handler try to take the same lock and
> deadlock result.
[[!tag open_issue_glibc]]Checking the code for any violations would be a useful
task of [[open_issues/code_analysis]]/[[open_issues/formal_verification]].
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