From: Bruno Haible <bruno@clisp.org>
Date: Mon, 20 Dec 2010 00:53:15 +0000 (+0100)
Subject: signal: Document problem with type of SIGRTMIN, SIGRTMAX on OSF/1 5.1.
X-Git-Tag: v0.1~3530
X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=0d454676975284448e48351525664ab4e6470a3c;p=gnulib.git

signal: Document problem with type of SIGRTMIN, SIGRTMAX on OSF/1 5.1.

* doc/posix-headers/signal.texi: Document OSF/1 5.1 problem.
* lib/strsignal.c (strsignal): Cast SIGRTMIN to 'int'.
---

diff --git a/ChangeLog b/ChangeLog
index 0a5f1efd3..43dc38e41 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2010-12-19  Bruno Haible  <bruno@clisp.org>
 
+	signal: Document problem with type of SIGRTMIN, SIGRTMAX on OSF/1 5.1.
+	* doc/posix-headers/signal.texi: Document OSF/1 5.1 problem.
+	* lib/strsignal.c (strsignal): Cast SIGRTMIN to 'int'.
+
+2010-12-19  Bruno Haible  <bruno@clisp.org>
+
 	sys_socket: Use POSIX compatible declarations on OSF/1 5.1.
 	* m4/sys_socket_h.m4 (gl_HEADER_SYS_SOCKET): On OSF/1, define
 	_POSIX_PII_SOCKET.
diff --git a/doc/posix-headers/signal.texi b/doc/posix-headers/signal.texi
index be6252324..9056d1e3e 100644
--- a/doc/posix-headers/signal.texi
+++ b/doc/posix-headers/signal.texi
@@ -35,4 +35,8 @@ Portability problems not fixed by Gnulib:
 @item
 Many signals are not defined on some platforms:
 mingw.
+@item
+The macros @code{SIGRTMIN} and @code{SIGRTMAX} expand to an expression of type
+@code{long} instead of @code{int} on some platforms:
+OSF/1 5.1.
 @end itemize
diff --git a/lib/strsignal.c b/lib/strsignal.c
index 8cd09d2b7..c9c7b1162 100644
--- a/lib/strsignal.c
+++ b/lib/strsignal.c
@@ -108,7 +108,7 @@ strsignal (int signum)
 #ifdef SIGRTMIN
       if (signum >= SIGRTMIN && signum <= SIGRTMAX)
         len = __snprintf (buffer, BUFFERSIZ - 1, _("Real-time signal %d"),
-                          signum - SIGRTMIN);
+                          signum - (int) SIGRTMIN);
       else
 #endif
         len = __snprintf (buffer, BUFFERSIZ - 1, _("Unknown signal %d"),