optimize signal mask ops. comment out "impossible" errors

    text           data     bss     dec     hex filename
-   1179             13       2    1194     4aa libc/misc/syslog/syslog.o
+   1165             13       2    1180     49c libc/misc/syslog/syslog.o
-    435              4       0     439     1b7 libc/pwd_grp/lckpwdf.o
+    393              4       0     397     18d libc/pwd_grp/lckpwdf.o
-     38              0       0      38      26 libc/signal/sigandset.o
+     32              0       0      32      20 libc/signal/sigandset.o
-     63              0       0      63      3f libc/signal/sigblock.o
+     56              0       0      56      38 libc/signal/sigblock.o
-     22              0       0      22      16 libc/signal/sigempty.o
+     20              0       0      20      14 libc/signal/sigempty.o
-     25              0       0      25      19 libc/signal/sigfillset.o
+     20              0       0      20      14 libc/signal/sigfillset.o
-     34              0       0      34      22 libc/signal/sigisempty.o
+     16              0       0      16      10 libc/signal/sigisempty.o
-     38              0       0      38      26 libc/signal/sigorset.o
+     32              0       0      32      20 libc/signal/sigorset.o
-    119              0       0     119      77 libc/signal/sigpause.o
+    113              0       0     113      71 libc/signal/sigpause.o
-    215              0       0     215      d7 libc/signal/sigset.o
+    211              0       0     211      d3 libc/signal/sigset.o
-     63              0       0      63      3f libc/signal/sigsetmask.o
+     56              0       0      56      38 libc/signal/sigsetmask.o
-    194              0       1     195      c3 libc/stdlib/abort.o
+    183              0       1     184      b8 libc/stdlib/abort.o
-    323              0       0     323     143 libc/unistd/sleep.o
+    309              0       0     309     135 libc/unistd/sleep.o

1 files changed, 4 insertions, 3 deletions

diff --git a/libpthread/linuxthreads.old/signals.c b/libpthread/linuxthreads.old/signals.c
index 23ba9778f..90655f8c1 100644
--- a/libpthread/linuxthreads.old/signals.c
+++ b/libpthread/linuxthreads.old/signals.c
@@ -196,7 +196,7 @@ int sigwait(const sigset_t * set, int * sig)
      and if not, install our dummy handler.  This is conformant to
      POSIX: "The effect of sigwait() on the signal actions for the
      signals in set is unspecified." */
-  sigfillset(&mask);
+  __sigfillset(&mask);
   sigdelset(&mask, __pthread_sig_cancel);
   for (s = 1; s <= NSIG; s++) {
     if (sigismember(set, s) &&
@@ -207,9 +207,10 @@ int sigwait(const sigset_t * set, int * sig)
       if (sighandler[s].old == NULL ||
 	  sighandler[s].old == (arch_sighandler_t) SIG_DFL ||
 	  sighandler[s].old == (arch_sighandler_t) SIG_IGN) {
+        memset(&sa, 0, sizeof(sa));
         sa.sa_handler = pthread_null_sighandler;
-        sigemptyset(&sa.sa_mask);
-        sa.sa_flags = 0;
+        /* __sigemptyset(&sa.sa_mask); */
+        /* sa.sa_flags = 0; */
         sigaction(s, &sa, NULL);
       }
     }