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Re: CVS 1.11.18 - Windows Bug - cannot write to stdout


From: Mark D. Baushke
Subject: Re: CVS 1.11.18 - Windows Bug - cannot write to stdout
Date: Wed, 17 Nov 2004 16:31:14 -0800

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Hi Conrad,

Conrad T. Pino <address@hidden> writes:

> I received a request for latest stable Windows binary
> and found anomaly show below my signature block.

Ouch.

> I think we had this problem on feature and fixed it.
> What's the story on stable branch?

This problem didn't get fixed on stable.

> Should I post the binary as it is?

Probably not. :-(

I have committed the following patch to the stable branch to fix the
problem.

        -- Mark

 2004-11-17  Mark D. Baushke  <address@hidden>
 
        * client.c (handle_m, handle_e): Winsock is returning
        SOCK_ERRNO == WSAENOTSOCK for select() problems and not
        setting errno. Do not bother with printing an error from a
        select() that is not returning an non-zero errno.
        (Report from Conrad T. Pino <address@hidden>.)
 
 Index: src/client.c
 ===================================================================
 RCS file: /cvs/ccvs/src/client.c,v
 retrieving revision 1.318.4.23
 diff -u -p -r1.318.4.23 client.c
 --- src/client.c       26 Oct 2004 19:01:38 -0000      1.318.4.23
 +++ src/client.c       18 Nov 2004 00:25:57 -0000
 @@ -3087,8 +3087,9 @@ handle_m (args, len)
      fflush (stderr);
      FD_ZERO (&wfds);
      FD_SET (STDOUT_FILENO, &wfds);
 +    errno = 0;
      s = select (STDOUT_FILENO+1, NULL, &wfds, NULL, NULL);
 -    if (s < 1)
 +    if (s < 1 && errno != 0)
          perror ("cannot write to stdout");
      fwrite (args, len, sizeof (*args), stdout);
      putc ('\n', stdout);
 @@ -3145,6 +3146,7 @@ handle_e (args, len)
      fflush (stdout);
      FD_ZERO (&wfds);
      FD_SET (STDERR_FILENO, &wfds);
 +    errno = 0;
      s = select (STDERR_FILENO+1, NULL, &wfds, NULL, NULL);
      /*
       * If stderr has problems, then adding a call to
 @@ -3152,7 +3154,7 @@ handle_e (args, len)
       * will not work. So, try to write a message on stdout and
       * terminate cvs.
       */
 -    if (s < 1)
 +    if (s < 1 && errno != 0)
          fperrmsg (stdout, 1, errno, "cannot write to stderr");
      fwrite (args, len, sizeof (*args), stderr);
      putc ('\n', stderr);
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