re PR preprocessor/61977 (powerpc preprocessor breaks on lines that end with "vector")

	PR preprocessor/61977
	* lex.c (cpp_peek_token): If peektok is CPP_EOF, back it up
	with all tokens peeked by the current function.

	* gcc.dg/cpp/pr61977.c: New test.

From-SVN: r221882

gcc/testsuite/ChangeLog

+2015-04-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR preprocessor/61977
+	* gcc.dg/cpp/pr61977.c: New test.
+
 2015-04-06  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	* gcc.dg/lto/chkp-ctor-merge_0.c: New.

gcc/testsuite/gcc.dg/cpp/pr61977.c

+/* PR preprocessor/61977 */
+/* { dg-do preprocess } */
+
+vector

libcpp/ChangeLog

+2015-04-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR preprocessor/61977
+	* lex.c (cpp_peek_token): If peektok is CPP_EOF, back it up
+	with all tokens peeked by the current function.
+
 2015-04-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR preprocessor/61977

libcpp/lex.c

@@ -2090,11 +2090,14 @@ cpp_peek_token (cpp_reader *pfile, int index)
     {
       peektok = _cpp_lex_token (pfile);
       if (peektok->type == CPP_EOF)
-	return peektok;
+	{
+	  index--;
+	  break;
+	}
     }
   while (index--);
 
-  _cpp_backup_tokens_direct (pfile, count + 1);
+  _cpp_backup_tokens_direct (pfile, count - index);
   pfile->keep_tokens--;
   pfile->cb.line_change = line_change;