[LU-6394] compile errors when _FORTIFY_SOURCE is used

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.7.0, Lustre 2.8.0
• Fix Version/s: Lustre 2.8.0
• Type: Bug
• Priority: Minor
• Reporter: Frank Zago (Inactive)
• Assignee: Dmitry Eremin (Inactive)
• Resolution: Fixed
• Labels: patch
• Severity: 3

Description

When Lustre is configured with CFLAGS="-D_FORTIFY_SOURCE=2 -O2" on Centos 6, the compilation will fails with errors such as this one:

cacheio.c: In function ‘qword_printhex’:
cacheio.c:174: error: ignoring return value of ‘fwrite’, declared with attribute warn_unused_result

The value is usually ignored because it doesn't matter.

Note that these errors tend to show on more modern distributions, that have _FORTIFY_SOURCE on by default.

Issue Links

• is related to: LU-2753 Tracking bug for static code analysis...

Comments

[Gerrit Updater]

frank zago ([e-mail]) uploaded a new patch: http://review.whamcloud.com/14126
Subject: LU-6394 all: fix compilation errors with FORTIFY_SOURCE
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 5844b42271ebb42aff86e27e96b55bdec50efd9a

[Jodi Levi (Inactive)]

Hi Dmitry,
Could you take this one?
Thank you!

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/14126/
Subject: LU-6394 all: fix compilation errors with FORTIFY_SOURCE
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: c58d3c5a102f97c6014b9a6342e6f7afd3a5cf5c