https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
Bernd Edlinger changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #23 from Bernd Edlinger ---
Author: edlinger
Date: Tue Feb 23 15:57:09 2016
New Revision: 233636
URL: https://gcc.gnu.org/viewcvs?rev=233636&root=gcc&view=rev
Log:
2016-02-23 Bernd Edlinger
PR libstdc++/69881
* in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #22 from Bernd Edlinger ---
yes, I would really have liked the warning, but...
/../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber
-I../../gcc-trunk/gcc/../libbacktrace -I/home/ed/gnu/gcc-build/./isl/include
-I/home/ed/gnu/gcc-tr
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #21 from Bernd Edlinger ---
(In reply to Jonathan Wakely from comment #20)
> (In reply to Bernd Edlinger from comment #19)
> > But I am sure that #define __need_offsetof can simply not work.
>
> So don't define that. It's undefined b
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #20 from Jonathan Wakely ---
(In reply to Bernd Edlinger from comment #19)
> But I am sure that #define __need_offsetof can simply not work.
So don't define that. It's undefined behaviour.
> I am not sure if it can compile at all, b
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #19 from Bernd Edlinger ---
(In reply to Jonathan Wakely from comment #18)
> > Yes, I do have such targets.
> > We use eCos at Softing as real time O/S a lot.
>
> Great, that's good to know.
>
> > I think I will build an ecos cross c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #18 from Jonathan Wakely ---
(In reply to Bernd Edlinger from comment #13)
> (In reply to Jonathan Wakely from comment #12)
> > (In reply to Bernd Edlinger from comment #9)
> > > right now I am trying to boot-strap this:
> > >
> > >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #17 from Bernd Edlinger ---
Created attachment 37749
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37749&action=edit
prerequisite patch to make c_std headers compile
not perfect, but probably an improvement...
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #16 from Bernd Edlinger ---
> But it does not look like the c_std headers are currently working.
> I've got symlinks to non-existing c_std header files:
>
> ccomplex
> cfenv
> cinttypes
> cstdalign
> cstdbool
> cstdint
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #15 from Bernd Edlinger ---
(In reply to Jonathan Wakely from comment #12)
> > Index: c_std/cstddef
> > ===
> > --- c_std/cstddef (revision 233581)
> > +++ c_std/cstdde
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #14 from Bernd Edlinger ---
OK, I built the ecos cross compiler now.
It works. But eCos headers don't work well with C99 because of
duplicate symbols with inline functions, so I have to use -std=c89,
but that started with gcc-5, so t
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #13 from Bernd Edlinger ---
(In reply to Jonathan Wakely from comment #12)
> (In reply to Bernd Edlinger from comment #9)
> > right now I am trying to boot-strap this:
> >
> > Index: c/cstddef
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #12 from Jonathan Wakely ---
(In reply to Bernd Edlinger from comment #9)
> right now I am trying to boot-strap this:
>
> Index: c/cstddef
> ===
> --- c/cstddef (revisio
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #11 from Bernd Edlinger ---
(In reply to Jakub Jelinek from comment #10)
> Why should libstdc++ try to workaround a bug in gmp.h? Just fix gmp.h...
Yes, and probably it is already fixed with gmp-6.1.0, I did not check.
I am trying
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment #10
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #9 from Bernd Edlinger ---
right now I am trying to boot-strap this:
Index: c/cstddef
===
--- c/cstddef (revision 233581)
+++ c/cstddef (working copy)
@@ -31,10 +31,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #8 from Bernd Edlinger ---
BTW:
the free-standing cstddef is also buggy:
#define __need_size_t
#define __need_ptrdiff_t
#define __need_NULL
#define __need_offsetof
#include_next
but GCC's stddef.h does not implement __need_offseto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #7 from Bernd Edlinger ---
Index: include/c_global/cstddef
===
--- include/c_global/cstddef(revision 233581)
+++ include/c_global/cstddef(working copy)
@@ -41,6 +
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #6 from Bernd Edlinger ---
(In reply to Jonathan Wakely from comment #4)
> The patch seems wrong, your new sections don't add anything to namespace std.
yes. I think probably cstddef is free to ignore __need_size_t. right?
Then it
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #5 from Jonathan Wakely ---
(In reply to Bernd Edlinger from comment #3)
> or
>
> #undef all these __need_XXX before including stddef.h,
> after all it is a bit bogus ghat gmp.h does:
>
> #define __need_size_t /* tell gcc stddef.h
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #4 from Jonathan Wakely ---
The patch seems wrong, your new sections don't add anything to namespace std.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #3 from Bernd Edlinger ---
or
#undef all these __need_XXX before including stddef.h,
after all it is a bit bogus ghat gmp.h does:
#define __need_size_t /* tell gcc stddef.h we only want size_t */
#include /* for size_t */
is
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #2 from Bernd Edlinger ---
Something like that might be needed?
Index: c_global/cstddef
===
--- c_global/cstddef(Revision 233574)
+++ c_global/cstddef(Arbeitskop
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69881
--- Comment #1 from Bernd Edlinger ---
note: back-porting r233572 will still be necessary to build 4.9 with gcc-6
but the build fails earlier than that.
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