On Wed, Mar 02, 2011 at 04:56:20AM -0500, Mike Frysinger wrote: > when testing things on ppc64, `make distcheck` failed because of a core file > in the tests/ subdir. playing with things, it seems that strace doesnt like > it when you cut its pipe short.
Yes, here is more reliable reproducer: $ (strace -df / 2>&1; echo >&2 \$?=$?) |: $?=141 strace can be killed by SIGPIPE, especially in debug mode which is quite verbose. I wouldn't say strace doesnt like it, though. Many programs get killed by SIGPIPE because it's quite logical for them to do so. > the new ptrace_setoptions does just that though -- it calls fgrep with -q > which causes fgrep to quite immediately upon a match. and the match in > question happens to be the first line. > > perhaps drop the -q option, have fgrep redirect to /dev/null, and add a > comment that the -q option cant be added back in ? Yes, I think it's OK to use /dev/null here, adding a comment why we should avoid grep -q. -- ldv
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