From f373b11f9ff46a2f4b918b0027d466eaa035297a Mon Sep 17 00:00:00 2001
From: Kito Cheng <kito@0xlab.org>
Date: Sun, 20 Jan 2013 00:15:15 +0800
Subject: [PATCH] Add const for first argument of sigismember for fit POSIX
 spec

Change-Id: Icbc67375282f2a22dce02e4bacab15ddae846057
---
 libc/include/signal.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libc/include/signal.h b/libc/include/signal.h
index e2713dbbb..0770b0f75 100644
--- a/libc/include/signal.h
+++ b/libc/include/signal.h
@@ -57,13 +57,13 @@ typedef int sig_atomic_t;
 extern const char* const sys_siglist[];
 extern const char* const sys_signame[];
 
-static __inline__ int sigismember(sigset_t* set, int signum) {
+static __inline__ int sigismember(const sigset_t* set, int signum) {
   int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0.
   if (set == NULL || bit < 0 || bit >= 8*sizeof(sigset_t)) {
     errno = EINVAL;
     return -1;
   }
-  unsigned long* local_set = (unsigned long*) set;
+  const unsigned long* local_set = (const unsigned long*) set;
   return (int) ((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1);
 }