V3 PATCH: Undefine conflicting macros

[Mark P Mitchell]

These headers need to follow the lead of wctype.h in undefining various
macros that have the same names as the functions being defined.

With this patch we have:

  pass/fail results:  172/10

on IRIX 6.5.  It looks like things are almost as good as on GNU/Linux,
which is very promising.

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com

Thu Nov  2 23:19:20 2000  Mark P Mitchell  <mark@codesourcery.com>

	* include/c/bits/std_cctype.h: Undefine macros that conflict
	with function names defined in this file.
	* include/c/bits/std_cstdio.h: Likewise.

Index: include/c/bits/std_cctype.h
===================================================================
RCS file: /cvs/gcc/egcs/libstdc++-v3/include/c/bits/std_cctype.h,v
retrieving revision 1.2
diff -c -p -r1.2 std_cctype.h
*** std_cctype.h	2000/10/31 01:26:05	1.2
--- std_cctype.h	2000/11/03 06:14:07
***************
*** 41,46 ****
--- 41,62 ----
  #pragma GCC system_header
  #include_next <ctype.h>
  
+ // Get rid of those macros defined in <ctype.h> in lieu of real functions.
+ #undef isalnum
+ #undef isalpha
+ #undef isblank
+ #undef iscntrl
+ #undef isdigit
+ #undef isgraph
+ #undef islower
+ #undef isprint
+ #undef ispunct
+ #undef isspace
+ #undef isupper
+ #undef isxdigit
+ #undef tolower
+ #undef toupper
+ 
  namespace std
  {
    extern "C" int isalnum(int __c);
Index: include/c/bits/std_cstdio.h
===================================================================
RCS file: /cvs/gcc/egcs/libstdc++-v3/include/c/bits/std_cstdio.h,v
retrieving revision 1.2
diff -c -p -r1.2 std_cstdio.h
*** std_cstdio.h	2000/10/31 01:26:05	1.2
--- std_cstdio.h	2000/11/03 06:14:07
***************
*** 41,46 ****
--- 41,56 ----
  #pragma GCC system_header
  #include_next <stdio.h>
  
+ // Get rid of those macros defined in <stdio.h> in lieu of real functions.
+ #undef clearerr
+ #undef feof
+ #undef ferror
+ #undef fileno
+ #undef getc
+ #undef getchar
+ #undef putc
+ #undef putchar
+ 
  namespace std 
  {
    using ::FILE;