Bug 403881 - Noisy and unnecessary "lowering visibility" warnings
Noisy and unnecessary "lowering visibility" warnings
Product: Fedora
Classification: Fedora
Component: gcc (Show other bugs)
All Linux
low Severity low
: ---
: ---
Assigned To: Jakub Jelinek
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2007-11-29 00:06 EST by Braden McDaniel
Modified: 2009-01-09 00:22 EST (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-01-09 00:22:23 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Test case (419 bytes, text/x-c++src)
2007-11-29 00:06 EST, Braden McDaniel
no flags Details

  None (edit)
Description Braden McDaniel 2007-11-29 00:06:31 EST
Description of problem:
Under certain circumstances, gcc emits some very noisy and--as far as I can
tell--unnecessary "lowering visibility" warnings.

Version-Release number of selected component (if applicable):

Additional info:
The attached example demonstrates the warning as it is encountered when using
boost::mpl::for_each. The warning is triggered when the types in the type vector
have default visibility and the function object has hidden visibility. Iterating
over public types while applying a function object that is part of the
implementation is a pretty normal use case.

The gcc main line does not issue a warning in this case. It appears that the
code that emits it has been replaced upstream, but lingers in Red Hat's gcc.

The only way I have found to suppress this warning is -Wno-attributes. That
nukes all attribute-related warnings, and as such is not really an acceptable
Comment 1 Braden McDaniel 2007-11-29 00:06:31 EST
Created attachment 272181 [details]
Test case
Comment 2 Bug Zapper 2008-11-26 03:44:44 EST
This message is a reminder that Fedora 8 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 8.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '8'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 8's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 8 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here: 
Comment 3 Bug Zapper 2009-01-09 00:22:23 EST
Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

Note You need to log in before you can comment on or make changes to this bug.