Remove CPP_PLACEMARKERs

	* cppexp.c (lex): Don't handle CPP_PLACEMARKER.
	* cpplex.c (_cpp_lex_token): Rename skip_newlines to next_bol
	* cpplib.c (skip_rest_of_line, check_eol, cpp_push_buffer):
	           Similarly.
	* cpplib.h: Remove CPP_PLACEMARKER.
	(struct lexer_state): Rename skip_newlines to next_bol.
	* cppmacro.c (stringify_arg): Don't handle CPP_PLACEMARKER.
	Simplify prev_white handling as a result.
	(paste_all_tokens): Don't worry about CPP_PLACEMARKERs.
	(parse_arg): Empty arguments are now empty, not CPP_PLACEMARKERs.
	(parse_args): Similarly.  Update argument count tests.
	(enter_macro_context): Return 2 to indicate an empty macro.
	(replace_args): Don't bother pre-expanding an empty argument.
	Handle placemarkers and ## extension during pre-expansion.
	(cpp_get_token): Handle empty macro expansions.  Don't worry
	about CPP_PLACEMARKERs.
	(_cpp_create_definition): Empty macros are now empty.
	(cpp_macro_defintion): Don't special case empty macros.
	* scan-decls.c: Don't bother with CPP_PLACEMARKERs.
	* c-lex.c: Similarly.

From-SVN: r37385

1 files changed, 3 insertions, 3 deletions

diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index fb34680..d70e6ec 100644
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -194,7 +194,7 @@ skip_rest_of_line (pfile)
      because they may be saving tokens prior to this directive for an
      external client.  So we use _cpp_get_token, with macros disabled.  */
   pfile->state.prevent_expansion++;
-  while (!pfile->state.skip_newlines)
+  while (!pfile->state.next_bol)
     _cpp_get_token (pfile, &token);
   pfile->state.prevent_expansion--;
 }
@@ -204,7 +204,7 @@ static void
 check_eol (pfile)
      cpp_reader *pfile;
 {
-  if (!pfile->state.skip_newlines)
+  if (!pfile->state.next_bol)
     {
       cpp_token token;
 
@@ -1728,7 +1728,7 @@ cpp_push_buffer (pfile, buffer, length)
   /* No read ahead or extra char initially.  */
   new->read_ahead = EOF;
   new->extra_char = EOF;
-  pfile->state.skip_newlines = 1;
+  pfile->state.next_bol = 1;
 
   CPP_BUFFER (pfile) = new;
   return new;