Bug #99098 Unnecessary calling of __atomic_thread_fence() as a workaround of gcc bug#77673

• Submitted: 27 Mar 2020 11:11
• Modified: 27 Mar 2020 14:06
• Reporter: Dmitry Shulga
• Status: Verified
• Category: MySQL Server: InnoDB storage engine
• Severity: S3 (Non-critical)
• Version: 5.5, 5.6, 5.7, 8.0
• OS: Any
• CPU Architecture: Any

[27 Mar 2020 11:11] Dmitry Shulga

Description:
There are unnecessary calling of __atomic_thread_fence() as a workaround
of gcc bug#77673. This bug was fixed both for GCC 5.5 and GCC 6.3 so
the original workaround is no more required for these GCC versions and
more recent.

How to repeat:
Inspect source code in the file storage/innobase/mach/mach0data.cc

[27 Mar 2020 12:02] Laurynas Biveinis

Duplicate of bug 89427, bug 92134

[27 Mar 2020 14:06] MySQL Verification Team

Thank you Mr. Shulga for both your report and for your contribution.

[27 Mar 2020 14:07] MySQL Verification Team

Verified as reported.