priority: fix potential race in reloading system-wide config
_gnutls_update_system_priorities
is called from gnutls_priority_set*
functions every time when the SYSTEM keyword is used and updates a global variable system_wide_priority_strings
if the configuration changes. Although the critical path is protected with mtime check, it should also hold a lock to avoid occasional race condition in multi-thread programs.
Checklist
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Commits have Signed-off-by:
with name/author being identical to the commit author -
Code modified for feature -
Test suite updated with functionality tests -
Test suite updated with negative tests -
Documentation updated / NEWS entry present (for non-trivial changes) -
CI timeout is 2h or higher (see Settings/CICD/General pipelines/Timeout)
Reviewer's checklist:
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Any issues marked for closing are addressed -
There is a test suite reasonably covering new functionality or modifications -
Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTION.md
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This feature/change has adequate documentation added -
No obvious mistakes in the code
Edited by Alexander Sosedkin