Mainline bootstrap failure on hppa2.0w-hp-hpux11.00

[Roger Sayle <roger at www dot eyesopen dot com>]

I'm getting a bootstrap failure on HPUX with current CVS mainline,
probably caused by the recent "-Werror" change.

The failure is building gcc/intl during stage2, which fails with the
error message

../../../gcc/gcc/intl/loadmsgcat.c: In function `_nl_load_domain':
../../../gcc/gcc/intl/loadmsgcat.c:524: warning: signed and unsigned type
in conditional expression

It turns out that the line in question is an innocent call to HPUX's
"isspace" macro defined in ctype.h.  On my version of HP-UX, the
relevant defintions look like:

extern unsigned int *__SB_masks;
extern int _isspace(int);

#define isspace(__c)  (__SB_masks ? __SB_masks[__c] & _ISSPACE : _isspace(__c))

which obviously causes GCC to complain about a signed/unsigned mismatch
in this, and all the other isalpha, isalnum, etc... macros.


My question is whether this is a problem with GCC's in_system_header,
or whether we need to run fixincludes on the affected file?  Just in
case it's the latter, I've attached /usr/include/ctype.h to this
e-mail.  Hopefully, this is enough for a fixincludes guru to come
up with a patch.

Many thanks in advance,

Roger
--
Roger Sayle,                         E-mail: roger@eyesopen.com
OpenEye Scientific Software,         WWW: http://www.eyesopen.com/
Suite 1107, 3600 Cerrillos Road,     Tel: (+1) 505-473-7385
Santa Fe, New Mexico, 87507.         Fax: (+1) 505-473-0833

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