wide char support and -fshort-wchar option

[Mallikarjun Goudar]

Hi,
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?

Please let me know.

Thanks,
Mallikarjuna

[Ian Lance Taylor]

On Thu, Jul 31, 2014 at 1:31 AM, Mallikarjun Goudar

Post by Mallikarjun Goudar
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

[Mallikarjun Goudar]

Post by Ian Lance Taylor
On Thu, Jul 31, 2014 at 1:31 AM, Mallikarjun Goudar

Post by Mallikarjun Goudar
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

Hi Ian,

Thanks for the reply.

//mallikarjuna