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On 1/18/13 1:30 AM, Mike Frysinger wrote:
> this is somewhat a continuation of this thread:
> http://lists.gnu.org/archive/html/bug-bash/2008-10/msg00091.html
>
> i've gotten more or less the same report in Gentoo:
> http://bugs.gentoo.org/447810
>
> the simple test case is:
> $ cat test.sh
> #!/bin/bash
> while :; do
> (:)& (:)& (:)& (:)& (:)& (:)& (:)& (:)& (:)& (:)&
> while read x ; do : ; done < <(echo foo)
> done
>
> execute `./test.sh` and we see failures pretty much all the time.
>
> a simple patch to workaround/fix the issue by Yuta SATOH:
> --- bash-4.2/redir.c
> +++ bash-4.2/redir.c
> @@ -632,7 +632,9 @@
> }
> else
> {
> - fd = open (filename, flags, mode);
> + do {
> + fd = open (filename, flags, mode);
> + } while ((fd < 0) && (errno == EINTR));
> #if defined (AFS)
> if ((fd < 0) && (errno == EACCES))
> {
>
> but we're not sure if this is the route to take ? seems like if bash is
> handling SIGCHLD, there's no avoiding this sort of check.
Why is open returning -1/EINTR when the SIGCHLD handler is installed with
SA_RESTART? The intent is that opens get restarted even when bash handles
SIGCHLD.
Chet
- --
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
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