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diff -up bash-4.1/sig.h.signal bash-4.1/sig.h
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--- bash-4.1/sig.h.signal 2009-01-04 20:32:41.000000000 +0100
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+++ bash-4.1/sig.h 2012-08-28 11:19:14.920224571 +0200
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@@ -96,6 +96,8 @@ do { \
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sigprocmask (SIG_BLOCK, &nvar, &ovar); \
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} while (0)
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+#define UNBLOCK_SIGNAL(ovar) sigprocmask (SIG_SETMASK, &ovar, (sigset_t *)NULL)
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+
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#if defined (HAVE_POSIX_SIGNALS)
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# define BLOCK_CHILD(nvar, ovar) \
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BLOCK_SIGNAL (SIGCHLD, nvar, ovar)
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diff -up bash-4.1/trap.c.signal bash-4.1/trap.c
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--- bash-4.1/trap.c.signal 2009-10-10 23:21:44.000000000 +0200
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+++ bash-4.1/trap.c 2012-08-28 10:58:14.746345797 +0200
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@@ -516,6 +516,8 @@ set_signal (sig, string)
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int sig;
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char *string;
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{
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+ sigset_t set, oset;
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+
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if (SPECIAL_TRAP (sig))
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{
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change_signal (sig, savestring (string));
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@@ -546,9 +548,10 @@ set_signal (sig, string)
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environment in which it is safe to do so. */
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if ((sigmodes[sig] & SIG_NO_TRAP) == 0)
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{
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- set_signal_handler (sig, SIG_IGN);
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+ BLOCK_SIGNAL (sig, set, oset);
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change_signal (sig, savestring (string));
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set_signal_handler (sig, trap_handler);
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+ UNBLOCK_SIGNAL (oset);
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}
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else
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change_signal (sig, savestring (string));
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