SIGINT, longjmp

[Hal Murray]

The problem is that somebody is masking off SIGINT.  It works if I replace 
setjmp+longjmp with sigsetjmp+siglongjmp.

The SIGINT handler was getting called with SIGINT masked off.  That seems a 
bit strange.  It was coming from deep within getnameinfo.

I haven't figured out if this is a bug in getnameinfo or if longjmp-ing is 
basically evil.


-- 
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