On Thu, Mar 04, 2010 at 01:54:06PM +0100, Werner Fink wrote:
> On Wed, Mar 03, 2010 at 01:20:09AM -0500, Glenn Fowler wrote:
> > the AT&T Software Technology ast 2010-03-01 source and binary release
> > has been posted to the download site
> > http://www.research.att.com/sw/download/
> > the notes and changes link has details on the release
>
>
> Hmmm ... this version shows memory leaks (again) and has
> problems with pipes:
>
> + /usr/src/packages/BUILD/ksh93/arch/linux.i386/bin/ksh shtests
> test basic.sh begins at 2010-03-04+11:38:14
> basic.sh[436]: early termination not causing broken pipe
> basic.sh[477]: pipefail causing /bin/true to wait for other end of
> pipe
> test basic.sh failed at 2010-03-04+11:38:42 with exit code 2 [ 95 tests 2
> errors ]
> test signal.sh begins at 2010-03-04+11:38:42
> signal.sh[55]: pipe with --pipefail PIPE trap hangs
> signal.sh[296]: kill -PIPE $$ failed, required termination by signal
> 'KILL'
> test signal.sh failed at 2010-03-04+11:39:57 with exit code 2 [ 26 tests 2
> errors ]
> test shcomp-basic.ksh begins at 2010-03-04+11:39:57
> shcomp-basic.ksh[436]: early termination not causing broken pipe
> shcomp-basic.ksh[477]: pipefail causing /bin/true to wait for other
> end of pipe
> test shcomp-basic.ksh failed at 2010-03-04+11:40:25 with exit code 2 [ 95
> tests 2 errors ]
> test shcomp-signal.ksh begins at 2010-03-04+11:40:25
> shcomp-signal.ksh[55]: pipe with --pipefail PIPE trap hangs
> shcomp-signal.ksh[296]: kill -PIPE $$ failed, required termination by
> signal 'KILL'
> test shcomp-signal.ksh failed at 2010-03-04+11:41:41 with exit code 2 [ 26
> tests 2 errors ]
> + /usr/src/packages/BUILD/ksh93/arch/linux.i386/bin/ksh
> /usr/src/packages/SOURCES/leak1.sh
> [leak1.sh: leak count at 2086]
> + /usr/src/packages/BUILD/ksh93/arch/linux.i386/bin/ksh
> /usr/src/packages/SOURCES/leak2.sh
> [leak2.sh: leak count at 2548]
>
> after running those testing scripts two ksh processes remains within
> an endless loop:
>
> 399 8441 99 0.1 3844 1364 1092 20 0 R 1 9:32
> /usr/src/packages/BUILD/ksh93/arch/linux.i386/bin/ksh
> 399 7964 95 0.1 3844 1368 1092 20 0 R 0 11:19
> /usr/src/packages/BUILD/ksh93/arch/linux.i386/bin/ksh
>
> an attached strace shows:
>
> write(1, "o\nhello\nhello\nhello\nhello\nhello\n"..., 8192) = -1 EPIPE
> (Broken pipe)
> --- SIGPIPE (Broken pipe) @ 0 (0) ---
> write(1, "o\nhello\nhello\nhello\nhello\nhello\n"..., 8192) = -1 EPIPE
> (Broken pipe)
> --- SIGPIPE (Broken pipe) @ 0 (0) ---
>
> for both processes. Beside this you'll find the scripts leak1.sh and leak2.sh
> in the attachments.
>
> Sometimes a further line is shown:
>
> shcomp-signal.ksh[296]: kill -VTALRM $$ failed, required termination
> by signal 'KILL'
With an older compiler I do not see the problems with the pipes
but the memory leaks remain.
Werner
--
"Having a smoking section in a restaurant is like having
a peeing section in a swimming pool." -- Edward Burr
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