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stddef.h, [C++] wchar_t vs size_t
- To: gcc at gcc dot gnu dot org, jason at cygnus dot com
- Subject: stddef.h, [C++] wchar_t vs size_t
- From: Benjamin Kosnik <bkoz at redhat dot com>
- Date: Mon, 9 Oct 2000 01:31:25 -0700
What's up with the wchar_t type definition when using the c++ compiler?
ginclude/stddef.h has typedefs for
typedef __SIZE_TYPE__ size_t;
typedef __PTRDIFF_TYPE__ ptrdiff_t;
yet
#ifndef __cplusplus
typedef __WCHAR_TYPE__ wchar_t;
#endif
Can somebody please explain why this is so? Why should wchar_t be a
special case? This contradicts ISO/IEC 9899:1999 (E), in particular:
7.17 Common definitions <stddef.h>
This oddity is making it hard/difficult/impossible to correctly deal with
c/c++ namespace issues.
If I comment out the ginclude/stddef.h oddnes, I get this:
/mnt/hd/bliss/src.gcc/libstdc++-v3/include/c_std/bits/std_cstddef.h:76: conflicting
types for `typedef long int wchar_t'
<internal>:76: previous declaration as `typedef __wchar_t wchar_t'
/mnt/hd/bliss/src.gcc/libstdc++-v3/include/c_std/bits/std_cstddef.h:76: using
directive `wchar_t' introduced ambiguous type `__wchar_t'
make[3]: *** [complex.lo] Error 1
make[3]: Leaving directory `/mnt/hd/ahimsa/bld-x86-gcc-3-c_std/i686-pc-linux-gnu/libstdc++-v3/src'
make[2]: *** [all-recursive] Error 1
??
-benjamin