public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c/95280] New: poor warning for attribute used on a function argument
@ 2020-05-22 19:47 msebor at gcc dot gnu.org
2020-05-22 21:56 ` [Bug c/95280] " egallager at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-05-22 19:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95280
Bug ID: 95280
Summary: poor warning for attribute used on a function argument
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC warns when attribute used is specified on a function argument (e.g., as a
mistake instead of unused) but the warning is devoid of any useful information:
$ cat z.c && gcc -S -Wall -Wextra z.c
int f (int __attribute__ ((used)) i);
z.c:1:1: warning: ‘used’ attribute ignored [-Wattributes]
1 | int f (int __attribute__ ((used)) i);
| ^~~
In contrast, Clang issues a much more informative message:
z.c:1:28: warning: 'used' attribute only applies to variables with non-local
storage, functions, and Objective-C methods [-Wignored-attributes]
int f (int __attribute__ ((used)) i);
^
1 warning generated.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c/95280] poor warning for attribute used on a function argument
2020-05-22 19:47 [Bug c/95280] New: poor warning for attribute used on a function argument msebor at gcc dot gnu.org
@ 2020-05-22 21:56 ` egallager at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: egallager at gcc dot gnu.org @ 2020-05-22 21:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95280
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=37874
CC| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
While touching the code affecting attributes on function arguments, it might
also be worth taking a look at bug 37874
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-05-22 21:56 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-22 19:47 [Bug c/95280] New: poor warning for attribute used on a function argument msebor at gcc dot gnu.org
2020-05-22 21:56 ` [Bug c/95280] " egallager at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).