merges r30526 and r30527 from trunk into ruby_1_9_2.

--
	* io.c (rb_f_syscall): Some syscall return unsigned or pointer value.
	  Therefore we should only check the result is -1 or not. [ruby-core:34062]
--
	* io.c (rb_f_syscall): Add warning messages. [ruby-core:34062]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30572 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,12 @@
+Thu Jan 13 00:06:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* io.c (rb_f_syscall): Add warning messages. [ruby-core:34062]
+
+Thu Jan 13 00:00:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* io.c (rb_f_syscall): Some syscall return unsigned or pointer value.
+	  Therefore we should only check the result is -1 or not. [ruby-core:34062]
+
 Wed Jan 12 16:25:12 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
 
 	* lib/net/http.rb (Net::HTTP#connect): makes it timeout during 

io.c

@@ -7562,6 +7562,10 @@ rb_f_syscall(int argc, VALUE *argv)
     int num, retval = -1;
 #endif
     int i;
+
+    if (RTEST(ruby_verbose)) {
+	rb_warning("We plan to remove a syscall function at future release. DL(Fiddle) provides safer alternative.");
+    }
 
     rb_secure(2);
     if (argc == 0)
@@ -7635,7 +7639,8 @@ rb_f_syscall(int argc, VALUE *argv)
 #endif
     }
 
-    if (retval < 0) rb_sys_fail(0);
+    if (retval == -1)
+	rb_sys_fail(0);
     return RETVAL2NUM(retval);
 #undef SYSCALL
 #undef NUM2SYSCALLID

version.h

@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 152
+#define RUBY_PATCHLEVEL 153
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1