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* [Bug c/45881] New: bit offset of bitfields
@ 2010-10-04 13:59 wek at host dot sk
2021-08-28 3:57 ` [Bug c/45881] " pinskia at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: wek at host dot sk @ 2010-10-04 13:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45881
Summary: bit offset of bitfields
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: wek@host.sk
A (builtin) function, returning bit offset for bitfields within structs, could
be useful to pass bit "addresses" as function parameters.
In analogy to offsetof()/sizeof(), a similar function returning number of bits
of a bitfield could be created, too, although it would be less useful than the
offset.
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug c/45881] bit offset of bitfields 2010-10-04 13:59 [Bug c/45881] New: bit offset of bitfields wek at host dot sk @ 2021-08-28 3:57 ` pinskia at gcc dot gnu.org 2021-09-13 20:47 ` pinskia at gcc dot gnu.org 2021-09-13 21:50 ` konfera at efton dot sk 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-08-28 3:57 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45881 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-08-28 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I thought I saw a paper about adding this and even bit sized types. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/45881] bit offset of bitfields 2010-10-04 13:59 [Bug c/45881] New: bit offset of bitfields wek at host dot sk 2021-08-28 3:57 ` [Bug c/45881] " pinskia at gcc dot gnu.org @ 2021-09-13 20:47 ` pinskia at gcc dot gnu.org 2021-09-13 21:50 ` konfera at efton dot sk 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-09-13 20:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45881 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2763.pdf It seems like they did not add this ... But they do have _Bitwidthof now ... ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/45881] bit offset of bitfields 2010-10-04 13:59 [Bug c/45881] New: bit offset of bitfields wek at host dot sk 2021-08-28 3:57 ` [Bug c/45881] " pinskia at gcc dot gnu.org 2021-09-13 20:47 ` pinskia at gcc dot gnu.org @ 2021-09-13 21:50 ` konfera at efton dot sk 2 siblings, 0 replies; 4+ messages in thread From: konfera at efton dot sk @ 2021-09-13 21:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45881 --- Comment #3 from Jan Waclawek <konfera at efton dot sk> --- Thanks for the comments and the link. Small embedded is generally frowned upon. The proposal is characteristically heavyweight and unwieldy. Maybe in C5x. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-09-13 21:50 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-10-04 13:59 [Bug c/45881] New: bit offset of bitfields wek at host dot sk 2021-08-28 3:57 ` [Bug c/45881] " pinskia at gcc dot gnu.org 2021-09-13 20:47 ` pinskia at gcc dot gnu.org 2021-09-13 21:50 ` konfera at efton dot sk
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