# HG changeset patch
# User stephent
# Date 1182532537 0
# Node ID f386b9b924173d7cf22f7319ca8052a7d5f30ce5
# Parent  c56a675b3b05315b3fc49227d038f4c46607036e
[xemacs-hg @ 2007-06-22 17:15:34 by stephent]
Try to use UNUSED with more versions of GCC and ICC. <87tzsz52bs.fsf@uwakimon.sk.tsukuba.ac.jp>

diff -r c56a675b3b05 -r f386b9b92417 src/ChangeLog
--- a/src/ChangeLog	Fri Jun 22 16:58:38 2007 +0000
+++ b/src/ChangeLog	Fri Jun 22 17:15:37 2007 +0000
@@ -1,3 +1,7 @@
+2007-06-23  Stephen J. Turnbull  <stephen@xemacs.org>
+
+	* compiler.h: Try to use USED with more compilers.  Thanks, Jerry!
+
 2007-06-22  Aidan Kehoe  <kehoea@parhasard.net>
 
 	* eval.c (restore_int):
diff -r c56a675b3b05 -r f386b9b92417 src/compiler.h
--- a/src/compiler.h	Fri Jun 22 16:58:38 2007 +0000
+++ b/src/compiler.h	Fri Jun 22 17:15:37 2007 +0000
@@ -210,19 +210,24 @@
 # endif /* GCC_VERSION >= NEED_GCC (2, 5, 0) */
 #endif /* ATTRIBUTE_CONST */
 
-/* Unused declarations; g++ and icc do not support this. */
 /*
    NOTE:  These macros MUST be named UNUSED (exactly) or something
    prefixed with USED_IF_, or DEFUN docstrings will be parsed incorrectly.
    See comments in make_docfile.c (write_c_args).  You'd think that this
    wouldn't happen, but unfortunately we do indeed have some arguments
    of DEFUNs unused for GNU compatibility or because features are missing.
+
+   #### At one time, __attribute__ ((unused)) confused G++.  We don't know
+   which versions.  Please report problems and fix conditionals.
+   #### A similar issue arose with the Intel CC.  We know that v7 didn't
+   work and v9 does.  Let us know if v8 works or not, please.
+   See <m34plsmh88.fsf@jerrypc.cs.usu.edu>.
 */
 #ifndef UNUSED_ARG
 # define UNUSED_ARG(decl) unused_##decl
 #endif
 #ifndef UNUSED
-# if defined(__GNUC__) && !defined(__cplusplus) && !defined(__INTEL_COMPILER)
+# if defined(__GNUC__) && (!defined(__INTEL_COMPILER) || __INTEL_COMPILER >= 800)
 #  define ATTRIBUTE_UNUSED __attribute__ ((unused))
 # else
 #  define ATTRIBUTE_UNUSED