Incorrect waitpid-handling in buffer.c.

[Johannes Grødem]

When doing waitpid, you should test for errno == EINTR.  While it
seems that the code as it is works just fine in ordinary use, it
doesn't work properly when Meta-CVS calls it[1].  (A straightforwarDd
fork/execvp, which works in a stand-alone test-program I wrote, so I'm
guessing CLISP is doing something strange with signal-handlers.)  Here
is a patch that checks for EINTR.  This should be correct for Unixes,
I don't know what to do with Windows or OS/2 or whatever.

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1. What's strange, though, is that I get a "No child processes" instead
   of an "Interrupted system call", but checking for EINTR fixes it in
   spite of this.  I'm a bit puzzled.  Regardless, though, I think the
   fix should be applied.

cvs-waitpid.patch
Description: Text Data

-- 
Johannes Grødem <OpenPGP: 5055654C>