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[PUSHED] gdb: Remove unused signal mask

In the following commit:

    commit 7feb7d068ae65557ede03c36468ebac61b0939ca
    Date:   Mon May 11 12:08:03 2009 +0000

The last useful uses of normal_mask in linux-nat.c were removed, since
then this variable has sat around being initialised, but never used.
There should be no user visible changes after this commit.


	* linux-nat.c (normal_mask): Delete.
	(_initialize_linux_nat): Don't initialise normal_mask.
 gdb/ChangeLog   | 5 +++++
 gdb/linux-nat.c | 6 ------
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 65165a2d46b..4b9eab31960 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -748,9 +748,6 @@ lwp_list_remove (struct lwp_info *lp)
-/* Original signal mask.  */
-static sigset_t normal_mask;
 /* Signal mask for use with sigsuspend in linux_nat_wait, initialized in
    _initialize_linux_nat.  */
 static sigset_t suspend_mask;
@@ -4684,9 +4681,6 @@ Enables printf debugging output."),
 			   &setdebuglist, &showdebuglist);
-  /* Save this mask as the default.  */
-  sigprocmask (SIG_SETMASK, NULL, &normal_mask);
   /* Install a SIGCHLD handler.  */
   sigchld_action.sa_handler = sigchld_handler;
   sigemptyset (&sigchld_action.sa_mask);

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