Add comment about passing structs as params

git-svn-id: svn://svn.cc65.org/cc65/trunk@843 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/doc/cc65.sgml b/doc/cc65.sgml
index 3f773f23be142f0b1e7c15ae4dbfd5112c9486b6..f2461389c0d7e6b968ecd7235dbe2786197b1faa 100644 (file)
--- a/doc/cc65.sgml
+++ b/doc/cc65.sgml
@@ -367,7 +367,8 @@ and the one defined by the ISO standard:
        an additional macro needed to access parameters in a variable
        parameter list in a C function.
        <p>
-<item> Functions may not return structs. However, struct assignment *is*
+<item> Functions may not return structs (or unions), and structs may not be
+       passed as parameters by value. However, struct assignment *is* 
        possible.
        <p>
 <item> Part of the C library is available only with fastcall calling