merges r30919 from trunk into ruby_1_9_2.

--
* signal.c (sig_trap): avoid pthread_sigmask(xx, &mask, &mask) usage
  because FreeBSD don't permit it. If it's used, it behave as
  pthread_sigmask(xx, NULL, &mask).

* signal.c (init_sigchld): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31519 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 6 deletions

diff --git a/signal.c b/signal.c
index ba3595454a..f952659657 100644
--- a/signal.c
+++ b/signal.c
@@ -953,11 +953,15 @@ sig_trap(int argc, VALUE *argv)
 	rb_raise(rb_eSecurityError, "Insecure: tainted signal trap");
     }
 #if USE_TRAP_MASK
-    /* disable interrupt */
-    sigfillset(&arg.mask);
-    pthread_sigmask(SIG_BLOCK, &arg.mask, &arg.mask);
+    {
+      sigset_t fullmask;
 
-    return rb_ensure(trap, (VALUE)&arg, trap_ensure, (VALUE)&arg);
+      /* disable interrupt */
+      sigfillset(&fullmask);
+      pthread_sigmask(SIG_BLOCK, &fullmask, &arg.mask);
+      
+      return rb_ensure(trap, (VALUE)&arg, trap_ensure, (VALUE)&arg);
+    }
 #else
     return trap(&arg);
 #endif
@@ -1003,15 +1007,17 @@ init_sigchld(int sig)
 #if USE_TRAP_MASK
 # ifdef HAVE_SIGPROCMASK
     sigset_t mask;
+    sigset_t fullmask;
 # else
     int mask;
+    int fullmask;
 # endif
 #endif
 
 #if USE_TRAP_MASK
     /* disable interrupt */
-    sigfillset(&mask);
-    pthread_sigmask(SIG_BLOCK, &mask, &mask);
+    sigfillset(&fullmask);
+    pthread_sigmask(SIG_BLOCK, &fullmask, &mask);
 #endif
 
     oldfunc = ruby_signal(sig, SIG_DFL);