Bug 927342 – dev-cpp/magic_enum-0.9.5 fails to compile: example_containers_set.cpp:42:79: error: value computed is not used [-Werror=unused-value]

• Status: RESOLVED DUPLICATE of bug 890206
• Product: Gentoo Linux

[Description Agostino Sarubbo 2024-03-20 09:46:09 UTC]

https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/

Issue: dev-cpp/magic_enum-0.9.5 fails to compile.
Discovered on: arm (internal ref: tinderbox_arm)

Info about the issue:
https://wiki.gentoo.org/wiki/Project:Tinderbox/Common_Issues_Helper#CF0003

[Comment 1 Agostino Sarubbo 2024-03-20 09:46:11 UTC]

Created attachment 887982 [details]
build.log

build log and emerge --info

[Comment 2 Agostino Sarubbo 2024-03-20 09:46:12 UTC]

Error(s) that match a know pattern in addition to what has been reported in the summary:


FAILED: example/CMakeFiles/example_containers_set.dir/example_containers_set.cpp.o 
/var/tmp/portage/dev-cpp/magic_enum-0.9.5/work/magic_enum-0.9.5/example/example_containers_set.cpp:42:79: error: value computed is not used [-Werror=unused-value]

[Comment 3 Agostino Sarubbo 2024-03-20 09:46:20 UTC]

different than bug 890206

[Comment 4 Sam James 2024-03-20 16:22:37 UTC]

It's the same thing really, no?

[Comment 5 Sam James 2024-03-21 02:12:51 UTC]

*** This bug has been marked as a duplicate of bug 890206 ***

[Comment 6 Agostino Sarubbo 2024-03-21 07:04:30 UTC]

(In reply to Sam James from comment #4)
> It's the same thing really, no?

Basically this is for a compile error, so you can fix the code and leave -Werror as is.

Bug 890206 is about remove -Werror (yes, when you remove -Werror, you fix this bug too)

[Comment 7 Sam James 2024-03-22 08:34:12 UTC]

I think we might have to agree to disagree on this one -- for me, it's a symptom of the same thing, and the error isn't really a meaningful one by itself (it's not like some uninitialised variable or something).