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* [Bug c/105208] New: incorrect -Wunused-but-set-variable for static const variables used in const expressions
@ 2022-04-10 19:20 muecker at gwdg dot de
2023-03-24 7:42 ` [Bug c/105208] " muecker at gwdg dot de
0 siblings, 1 reply; 2+ messages in thread
From: muecker at gwdg dot de @ 2022-04-10 19:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105208
Bug ID: 105208
Summary: incorrect -Wunused-but-set-variable for static const
variables used in const expressions
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: muecker at gwdg dot de
Target Milestone: ---
In the following example, which uses an (undocumented?) extension
that allows using 'y' where a const expression is required,
there is then an incorrect warning:
void test(void)
{
static const int y = 2;
enum { A = y };
}
<source>:4:22: warning: variable 'y' set but not used
[-Wunused-but-set-variable]
https://godbolt.org/z/7Y7KE5v59
Clang supports this too but does not warn.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c/105208] incorrect -Wunused-but-set-variable for static const variables used in const expressions
2022-04-10 19:20 [Bug c/105208] New: incorrect -Wunused-but-set-variable for static const variables used in const expressions muecker at gwdg dot de
@ 2023-03-24 7:42 ` muecker at gwdg dot de
0 siblings, 0 replies; 2+ messages in thread
From: muecker at gwdg dot de @ 2023-03-24 7:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105208
--- Comment #1 from Martin Uecker <muecker at gwdg dot de> ---
Still affects 12.x but seems to have disappeared on trunk.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-04-10 19:20 [Bug c/105208] New: incorrect -Wunused-but-set-variable for static const variables used in const expressions muecker at gwdg dot de
2023-03-24 7:42 ` [Bug c/105208] " muecker at gwdg dot de
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