public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug c/64577] New: No -Wpadded warning on padding bitfields @ 2015-01-12 23:17 chengniansun at gmail dot com 2015-01-14 12:36 ` [Bug middle-end/64577] " mpolacek at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: chengniansun at gmail dot com @ 2015-01-12 23:17 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64577 Bug ID: 64577 Summary: No -Wpadded warning on padding bitfields Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: chengniansun at gmail dot com It seems that GCC does not emit -Wpadded warnings on the padding of bit-fields. $: cat t.c struct S1 { unsigned f0 : 17; unsigned f1 : 17; }; int main(void) { struct S1 s1; return 0; } $: $: gcc-trunk -Wpadded t.c t.c:4:1: warning: padding struct size to alignment boundary [-Wpadded] }; ^ $: $: clang-trunk -Wpadded t.c t.c:3:14: warning: padding struct 'struct S1' with 15 bits to align 'f1' [-Wpadded] unsigned f1 : 17; ^ t.c:1:8: warning: padding size of 'struct S1' with 15 bits to alignment boundary [-Wpadded] struct S1 { ^ 2 warnings generated. $: ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/64577] No -Wpadded warning on padding bitfields 2015-01-12 23:17 [Bug c/64577] New: No -Wpadded warning on padding bitfields chengniansun at gmail dot com @ 2015-01-14 12:36 ` mpolacek at gcc dot gnu.org 2015-02-11 9:32 ` chengniansun at gmail dot com 2015-02-11 9:47 ` mpolacek at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-01-14 12:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64577 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org Component|c |middle-end --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- -Wpadded is implemented in stor-layout.c, so moving to middle-end component. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/64577] No -Wpadded warning on padding bitfields 2015-01-12 23:17 [Bug c/64577] New: No -Wpadded warning on padding bitfields chengniansun at gmail dot com 2015-01-14 12:36 ` [Bug middle-end/64577] " mpolacek at gcc dot gnu.org @ 2015-02-11 9:32 ` chengniansun at gmail dot com 2015-02-11 9:47 ` mpolacek at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: chengniansun at gmail dot com @ 2015-02-11 9:32 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64577 --- Comment #2 from Chengnian Sun <chengniansun at gmail dot com> --- (In reply to Marek Polacek from comment #1) > -Wpadded is implemented in stor-layout.c, so moving to middle-end component. Hi Marek, Is this bug confirmed? Thanks. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/64577] No -Wpadded warning on padding bitfields 2015-01-12 23:17 [Bug c/64577] New: No -Wpadded warning on padding bitfields chengniansun at gmail dot com 2015-01-14 12:36 ` [Bug middle-end/64577] " mpolacek at gcc dot gnu.org 2015-02-11 9:32 ` chengniansun at gmail dot com @ 2015-02-11 9:47 ` mpolacek at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: mpolacek at gcc dot gnu.org @ 2015-02-11 9:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64577 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-02-11 Ever confirmed|0 |1 --- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Ok, confirming, I think that warning could be useful. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-02-11 9:47 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-01-12 23:17 [Bug c/64577] New: No -Wpadded warning on padding bitfields chengniansun at gmail dot com 2015-01-14 12:36 ` [Bug middle-end/64577] " mpolacek at gcc dot gnu.org 2015-02-11 9:32 ` chengniansun at gmail dot com 2015-02-11 9:47 ` mpolacek 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).