svn commit: r352275 - in head/lib/libedit: . TEST edit readline

[Dimitry Andric]

On 14 Sep 2019, at 06:25, Warner Losh <imp at bsdimp.com> wrote:
> 
> On Fri, Sep 13, 2019, 10:11 PM Peter Jeremy <peter at rulingia.com> wrote:
> On 2019-Sep-13 16:33:15 -0400, Charlie Li <ml+freebsd at vishwin.info> wrote:
> >Baptiste Daroussin wrote:
> >> Author: bapt
> >> Date: Fri Sep 13 06:50:02 2019
> >> New Revision: 352275
> >> URL: https://svnweb.freebsd.org/changeset/base/352275
> >>
> >> Log:
> >>   Update libedit to a snapshot from 2019-09-10
> >>   Reviewed by:       Yuichiro Naito <naito.yuichiro_gmail.com>
> >>   MFC after: 3 weeks
> >>   Differential Revision:     https://reviews.freebsd.org/D21584
> >>
> >I posted in phab but repeating here, this breaks the build on (at least)
> >aarch64:
> 
> It breaks the build on arm and arm64 only.
> 
> wint_t is int on all platforms:
> sys/sys/_types.h:
> typedef int             __ct_rune_t;    /* arg type for ctype funcs */
> typedef __ct_rune_t     __wint_t;       /* wint_t (see above) */
> 
> but wchar_t varies between unsigned and signed:
> $ grep '__wchar_t' sys/*/include/_types.h
> sys/arm/include/_types.h:typedef        unsigned int    ___wchar_t;
> sys/arm64/include/_types.h:typedef      unsigned int    ___wchar_t;
> sys/mips/include/_types.h:typedef       int             ___wchar_t;
> sys/powerpc/include/_types.h:typedef    int             ___wchar_t;
> sys/riscv/include/_types.h:typedef      int             ___wchar_t;
> sys/sparc64/include/_types.h:typedef    int             ___wchar_t;
> sys/x86/include/_types.h:typedef        int             ___wchar_t;
> 
> Looking back into history, it looks like the "unsigned" is part
> of the ARM EABI.
> 
> We should confirm that. It is definitely part of the OABI stuff, but EABI was supposed to fix differences like this...

As far as I know, arm has always been the odd one out, but even then,
you should assume anything about the signedness of char. :)

In any case, I have put up a fix for review here, which sidesteps that
issue: https://reviews.freebsd.org/D21657

-Dimitry

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