From ac49558bddf0f8293fc5eed52377567b444a4400 Mon Sep 17 00:00:00 2001
From: rillig <rillig>
Date: Sun, 6 Jan 2008 19:13:31 +0000
Subject: C compilers also emit error messages that are worth being explain.

---
 mk/help/c.help | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 mk/help/c.help

(limited to 'mk/help')

diff --git a/mk/help/c.help b/mk/help/c.help
new file mode 100644
index 00000000000..a8d37b2226a
--- /dev/null
+++ b/mk/help/c.help
@@ -0,0 +1,16 @@
+# $NetBSD: c.help,v 1.1 2008/01/06 19:13:31 rillig Exp $
+
+# This file contains typical error messages from C++ compilers and
+# instructions how to fix them properly.
+
+# === Invalid lvalue in increment ===
+#
+# Once upon a time, it was possible to say "((int)foo)++". With gcc4,
+# this no longer works, and now you have to say "foo = (int)foo + 1".
+#
+# This becomes more complicated in macros that access datastructures,
+# which involves much pointer arithmetics. A popular example is obstack,
+# a collection of "object stack macros". A patch for fixing that is in
+# devel/coconut/patches/patch-ab revision 1.1.
+#
+# Keywords: C lvalue increment obstack obstack_ptr_grow
-- 
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