21.2 C-g problems on HP-UX-B.10.20, 11.11, Solaris 5.7 and 5.8

[Klaus Zeitler]

>>>>> "Richard" == Richard Stallman <address@hidden> writes:
    Richard> 
    Richard> Are there any people on HPUX and Solaris that can try to debug
    Richard> these problems with C-g?  The HPUX case may have been fixed by
    Richard> the recent change regarding SA_RESTART; if so, it is conceivable
    Richard> that adding
    Richard> 
    Richard>     #define BROKEN_SA_RESTART
    Richard> 
    Richard> in the s/*.h file for Solaris might fix the problem.  Does it?
    Richard> 

I've started looking into this on Solaris 5.8 in cvs version.

The first question that came up was, is it really necessary to set
BROKEN_SIGINFO and use polling instead?
Since I don't know I made sure that BROKEN_SIGINFO is not set, i.e.
I've added to sol2-5.h the line:
#undef BROKEN_SIGIO
this alone didn't do it cause then the function unrequest_sigio
isn't defined (properly) in sysdep.c.
Thus I made sure that FASYNC is defined (from /usr/include/sys/file.h) by
adding to sysdep.c (seems that there's no define for SOLARIS2_5)
#ifdef SOLARIS2_4
#include <sys/file.h>
#endif

with these changes emacs appears to work (i.e. C-g works, but I haven't
thoroughly tested yet, especially since I don't know the developers
intentions to disable SIGIO)

Still I think that the problem why C-g doesn't work with polling instead
of SIGIO may need further investigation.

If I'm on the right track I can investigate Solaris 5.7 and HP-UX next week.

Klaus

-- 
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|  Klaus Zeitler      Lucent Technologies  |
|  Email:             address@hidden  |
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I didn't know it was impossible when I did it.