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Subject: [Bug gdb/12702] gdb can hang waiting for thread group leader
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http://sourceware.org/bugzilla/show_bug.cgi?id=12702

--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2011-05-27 16:55:43 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    jkratoch@sourceware.org    2011-05-27 16:55:39

Modified files:
    gdb            : ChangeLog linux-nat.c 
    gdb/testsuite  : ChangeLog 
Added files:
    gdb/testsuite/gdb.threads: leader-exit.c leader-exit.exp 

Log message:
    gdb/
    Fix PR 10970, PR 12702.
    * linux-nat.c (linux_lwp_is_zombie): New function.
    (wait_lwp): Initialize status.  New variable prev_mask.  Block signals.
    Check for linux_lwp_is_zombie.  Use WNOHANG and sigsuspend.

    gdb/testsuite/
    * gdb.threads/leader-exit.c: New file.
    * gdb.threads/leader-exit.exp: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.13060&r2=1.13061
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/linux-nat.c.diff?cvsroot=src&r1=1.205&r2=1.206
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.2728&r2=1.2729
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.threads/leader-exit.c.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.threads/leader-exit.exp.diff?cvsroot=src&r1=NONE&r2=1.1

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