From 21470a3ca9458b76a97d52bd1150c5012ac5a890 Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Wed, 24 Apr 2013 17:33:30 +0000
Subject: 	* faq-programming.xml (faq.programming.64bitporting): Mention
 the 	-Wformat and -Wall gcc options.

---
 winsup/doc/faq-programming.xml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'winsup/doc/faq-programming.xml')

diff --git a/winsup/doc/faq-programming.xml b/winsup/doc/faq-programming.xml
index c46e05f18..8a1bb962b 100644
--- a/winsup/doc/faq-programming.xml
+++ b/winsup/doc/faq-programming.xml
@@ -115,7 +115,11 @@ datatypes when the AMD64 CPU was new.</para>
     printf ("%d %ld\n", l, i);
 </screen>
 
-may not print what you think it should.
+may not print what you think it should.  Enable the gcc options -Wformat or
+-Wall, which warn about type mismatches in printf/scanf functions.
+
+<note>Using -Wall (optionally with -Werror to drive the point home) makes a
+lot of sense in general, not only when porting code to a new platform.</note>
 </para></listitem>
 
 <listitem><para>
-- 
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