Merged revisions 178381 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r178381 | tilghman | 2009-02-24 14:52:44 -0600 (Tue, 24 Feb 2009) | 2 lines
  
  Apparently, a void cast doesn't override warn_unused_result.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@178382 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/asterisk.c

@@ -3117,7 +3117,10 @@ int main(int argc, char *argv[])
 			int cpipe[2];
 
 			/* PIPE signal ensures that astcanary dies when Asterisk dies */
-			(void) pipe(cpipe);
+			if (pipe(cpipe)) {
+				fprintf(stderr, "Unable to open pipe for canary process: %s\n", strerror(errno));
+				exit(1);
+			}
 			canary_pipe = cpipe[0];
 
 			snprintf(canary_filename, sizeof(canary_filename), "%s/alt.asterisk.canary.tweet.tweet.tweet", ast_config_AST_RUN_DIR);