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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/105210] gcc/auto-profile.cc:391:11: warning: variable 'level'
 set but not used
Date: Sun, 10 Apr 2022 20:04:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105210

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
It would appear that clang trunk is better at finding set-but-not-used
variables than gcc.

Here are some more cases:

./../trunk.git/gcc/genautomata.cc:5664:7: warning: variable 'alts_number' s=
et
but not used [-Wunused-but-set-variable]
../../trunk.git/gcc/graphite-poly.cc:344:7: warning: variable 'nb_reads' set
but not used [-Wunused-but-set-variable]
../../trunk.git/gcc/graphite-poly.cc:345:7: warning: variable 'nb_writes' s=
et
but not used [-Wunused-but-set-variable]
../../trunk.git/gcc/lto-wrapper.cc:1428:12: warning: variable 'n_debugobj' =
set
but not used [-Wunused-but-set-variable]
../../trunk.git/libdecnumber/dpd/decimal64.c:617:8: warning: variable 'n' s=
et
but not used [-Wunused-but-set-variable]
../../trunk.git/gcc/tree-switch-conversion.cc:2042:11: warning: variable
'ranges' set but not used [-Wunused-but-set-variable]

I am not sure if these variables are candidates for deletion, or some code
should be using them.=