cppinit.c (cpp_post_options): Shut off macro expansion if -fpreprocessed.

	* cppinit.c (cpp_post_options): Shut off macro expansion if
	-fpreprocessed.
	* cpplib.c (_cpp_handle_directive): If -fpreprocessed, accept
	IN_I directives only if the # is in column 1 and the directive
	name begins in column 2.
	* cppmain.c (scan_buffer): Insert a space between # and an
	identifier, when that identifier is a directive name.

	* tradcpp.c (struct file_buf): Add a pointer to the next entry
	in the header search path.
	(enum node_type): Add T_INCLUDE_NEXT.
	(directive_table): Add entry for include_next.
	(do_include_next): New function.
	(process_include): New routine, broken out of do_include.
	(finclude): Insert 'nhd' argument, to be copied into
	next_header_dir of the new buffer.
	(main): Adjust to match.
	* gsyslimits.h, limity.h: Un-indent #include_next.

testsuite:
	* gcc.dg/cpp/direct2.c: New test.
	* gcc.dg/cpp/direct2s.c: New test.

	* gcc.c-torture/execute/920730-1t.c: #undef __GNUC__ at head.

From-SVN: r41932

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/cppmain.c b/gcc/cppmain.c
index ceab9c9..db7f073 100644
--- a/gcc/cppmain.c
+++ b/gcc/cppmain.c
@@ -238,6 +238,13 @@ scan_buffer (pfile)
 		       == AVOID_LPASTE
 		   && cpp_avoid_paste (pfile, &tokens[1 - index], token))
 	    token->flags |= PREV_WHITE;
+	  /* Special case '# <directive name>': insert a space between
+	     the # and the token.  This will prevent it from being
+	     treated as a directive when this code is re-preprocessed.
+	     XXX Should do this only at the beginning of a line, but how?  */
+	  else if (token->type == CPP_NAME && token->val.node->directive_index
+		   && tokens[1 - index].type == CPP_HASH)
+	    token->flags |= PREV_WHITE;
 
 	  cpp_output_token (token, print.outf);
 	  print.printed = 1;