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Re: wide char support and -fshort-wchar option
- From: Ian Lance Taylor <iant at google dot com>
- To: Mallikarjun Goudar <mallikarjun dot gouda at gmail dot com>
- Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Fri, 1 Aug 2014 08:34:43 -0700
- Subject: Re: wide char support and -fshort-wchar option
- Authentication-results: sourceware.org; auth=none
- References: <CACz30gAwDGAKJnL8Y4wFgsM1L3mr4-yASTH+jMiqW9G_OdstKw at mail dot gmail dot com>
On Thu, Jul 31, 2014 at 1:31 AM, Mallikarjun Goudar
<mallikarjun.gouda@gmail.com> wrote:
>
> I would like to use wchar_t as unsigned short. I used -fshort-wchar
> option to make this happen.
> But i get following warnings when compile and link a test case.
>
> 'libc.a(ansi_files.o) uses 4-byte wchar_t yet the output is to use
> 2-byte wchar_t; use of wchar_t values across objects may fail"'
>
> To resolve this, i should be rebuilding gcc libraries with -fshort-wchar option?
libc.a is not a GCC library. It's the C library, which does not come
with GCC. To avoid that warning you will have to rebuild libc.a. Or,
of course, you can ignore the warning and be careful not to pass
wchar_t values to libc.
Ian