c-decl.c (duplicate_decls): If `warn_traditional'...

        * c-decl.c (duplicate_decls): If `warn_traditional', warn when
        a non-static function declaration follows a static one.
        * invoke.texi (-Wtraditional): Document the extra check now done
        by this flag.

From-SVN: r24703

gcc/ChangeLog

+Sat Jan 16 19:31:07 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* c-decl.c (duplicate_decls): If `warn_traditional', warn when
+	a non-static function declaration follows a static one.
+
+	* invoke.texi (-Wtraditional): Document the extra check now done
+	by this flag.
+
 Sat Jan 16 15:13:46 1999  Jeffrey A Law  (law@cygnus.com)
 
 	* pa.md (shadd): Create shadd insns, even if the result of the shift is

gcc/c-decl.c

 /* Process declarations and variables for C compiler.
-   Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1988, 92-98, 1999 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -1858,6 +1858,14 @@ duplicate_decls (newdecl, olddecl, different_binding_level)
 	      && !TREE_PUBLIC (newdecl))
 	    warning_with_decl (newdecl, "static declaration for `%s' follows non-static");
 
+	  /* If warn_traditional, warn when a non-static function
+	     declaration follows a static one. */
+	  if (warn_traditional
+	      && TREE_CODE (olddecl) == FUNCTION_DECL
+	      && !TREE_PUBLIC (olddecl)
+	      && TREE_PUBLIC (newdecl))
+	    warning_with_decl (newdecl, "non-static declaration for `%s' follows static");
+
 	  /* Warn when const declaration follows a non-const
 	     declaration, but not for functions.  */
 	  if (TREE_CODE (olddecl) != FUNCTION_DECL

gcc/invoke.texi

-@c Copyright (C) 1988,89,92,93,94,95,96,97,98,1999 Free Software Foundation, Inc.
+@c Copyright (C) 1988, 89, 92-98, 1999 Free Software Foundation, Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file gcc.texi.
 
@@ -1548,6 +1548,10 @@ the block.
 
 @item
 A @code{switch} statement has an operand of type @code{long}.
+
+@item
+A non-@code{static} function declaration follows a @code{static} one.
+This construct is not accepted by some traditional C compilers.
 @end itemize
 
 @item -Wundef