[Bug other/37311] New: C frontend rejects __typeof__(bitfield).

[Bug other/37311] New: C frontend rejects __typeof__(bitfield).

[pluto at agmk dot net]

$ cat x.c
struct { int a:1; } bf;
__typeof__(bf.a) clone;

$ g++ -x c x.c -c
x.c:2: error: 'typeof' applied to a bit-field

this testcase was extracted from gnupg-1.4.9 sources.
it works at least on gcc-3.2.3 (Red Hat Linux 3.2.3-53).


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           Summary: C frontend rejects __typeof__(bitfield).
           Product: gcc
           Version: 4.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pluto at agmk dot net
GCC target triplet: *-gnu-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37311

[Bug other/37311] C frontend rejects __typeof__(bitfield).

[joseph at codesourcery dot com]

------- Comment #1 from joseph at codesourcery dot com  2008-09-01 11:59 -------
Subject: Re:   New: C frontend rejects __typeof__(bitfield).

On Mon, 1 Sep 2008, pluto at agmk dot net wrote:

> $ cat x.c
> struct { int a:1; } bf;
> __typeof__(bf.a) clone;
> 
> $ g++ -x c x.c -c
> x.c:2: error: 'typeof' applied to a bit-field
> 
> this testcase was extracted from gnupg-1.4.9 sources.
> it works at least on gcc-3.2.3 (Red Hat Linux 3.2.3-53).

If you mean to report a C bug, use component "c"; for C++, component 
"c++".  For C this is a deliberate change to reject typeof on bit-fields 
just as sizeof is rejected on bit-fields; see bug 10333.  Your example 
uses g++ and I don't know if it's a deliberate change for C++.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37311

[Bug other/37311] C frontend rejects __typeof__(bitfield).

[pluto at agmk dot net]

------- Comment #2 from pluto at agmk dot net  2008-09-01 12:58 -------
(In reply to comment #1)
> Subject: Re:   New: C frontend rejects __typeof__(bitfield).
> 
> On Mon, 1 Sep 2008, pluto at agmk dot net wrote:
> 
> > $ cat x.c
> > struct { int a:1; } bf;
> > __typeof__(bf.a) clone;
> > 
> > $ g++ -x c x.c -c
> > x.c:2: error: 'typeof' applied to a bit-field
> > 
> > this testcase was extracted from gnupg-1.4.9 sources.
> > it works at least on gcc-3.2.3 (Red Hat Linux 3.2.3-53).
> 
> If you mean to report a C bug, use component "c"; for C++, component 
> "c++".  For C this is a deliberate change to reject typeof on bit-fields 
> just as sizeof is rejected on bit-fields; see bug 10333.

ok, i found the right solution:
http://lists.gnupg.org/pipermail/gnupg-devel/2008-April/024344.html

> Your example uses g++ and I don't know if it's a deliberate change for C++.

i used the 'g++ -x c' which means C.


-- 

pluto at agmk dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37311