* invoke.texi (-Wshadow): Clarify.

From-SVN: r41420

gcc/ChangeLog

+2001-04-19  Jakub Jelinek  <jakub@redhat.com>
+
+	* invoke.texi (-Wshadow): Clarify.
+
 2001-04-18  Mark Mitchell  <mark@codesourcery.com>
 
 	* loop.c (load_mems): Examine all the instructions in the loop

gcc/invoke.texi

@@ -2135,7 +2135,8 @@ conversion warnings, for the full set use @samp{-Wconversion}.
 Warn if an undefined identifier is evaluated in an @samp{#if} directive.
 
 @item -Wshadow
-Warn whenever a local variable shadows another local variable.
+Warn whenever a local variable shadows another local variable, parameter or
+global variable or whenever a built-in function is shadowed.
 
 @item -Wid-clash-@var{len}
 Warn whenever two distinct identifiers match in the first @var{len}