cpphash.c: Fix formatting, update commentary.

	* cpphash.c: Fix formatting, update commentary.
	(dump_definition): Take three separate arguments instead of a
	MACRODEF structure argument.
	* cpphash.h: Update prototype of dump_definition.
	* cppinit.c (cpp_finish): Update call of dump_definition.

	* cpplib.c (do_define): Always create new hash entry with
	T_MACRO type.  Remove redundant check for redefinition of
	poisoned identifier.  Update call of dump_definition.
	(do_undef): Don't call check_macro_name.  Rename sym_length to
	len.
	(do_error, do_warning): Don't use copy_rest_of_line or
	SKIP_WHITE_SPACE.
	(do_warning): Don't use pedwarn for the actual warning,
	only the notice about its not being in the standard.  (Fixes
	bug with #warning in system headers.)
	(do_ident): Stricter argument checking - accept only a single
	string after #ident.  Also, macro-expand the line.
	(do_xifdef): Use cpp_defined.  De-obfuscate.

	(do_pragma): Split out specific pragma handling to separate
	functions.  Use get_directive_token.  Update commentary.  Do
	not pass on #pragma once or #pragma poison to the front end.
	(do_pragma_once, do_pragma_implementation, do_pragma_poison,
	do_pragma_default): New.

From-SVN: r31931

1 files changed, 7 insertions, 9 deletions

diff --git a/gcc/cpphash.c b/gcc/cpphash.c
index 5d6e760..fc2b8ff 100644
--- a/gcc/cpphash.c
+++ b/gcc/cpphash.c
@@ -89,8 +89,7 @@ struct argdata
 };
 
 
-/* Return hash function on name.  must be compatible with the one
-   computed a step at a time, elsewhere  */
+/* Calculate hash function on a string.  */
 
 static unsigned int
 hashf (s, len)
@@ -169,7 +168,6 @@ void
 delete_macro (hp)
      HASHNODE *hp;
 {
-
   if (hp->prev != NULL)
     hp->prev->next = hp->next;
   if (hp->next != NULL)
@@ -1575,15 +1573,15 @@ comp_def_part (first, beg1, len1, beg2, len2, last)
    to be read back in again. */
 
 void
-dump_definition (pfile, macro)
+dump_definition (pfile, sym, len, defn)
      cpp_reader *pfile;
-     MACRODEF macro;
+     const U_CHAR *sym;
+     long len;
+     DEFINITION *defn;
 {
-  DEFINITION *defn = macro.defn;
-
-  CPP_RESERVE (pfile, macro.symlen + sizeof "#define ");
+  CPP_RESERVE (pfile, len + sizeof "#define ");
   CPP_PUTS_Q (pfile, "#define ", sizeof "#define " -1);
-  CPP_PUTS_Q (pfile, macro.symnam, macro.symlen);
+  CPP_PUTS_Q (pfile, sym, len);
 
   if (defn->nargs == -1)
     {