libcpp

[pf3gnuchains/gcc-fork.git] / libcpp / macro.c

diff --git a/libcpp/macro.c b/libcpp/macro.c
index 50bb34d..3a3bf41 100644 (file)
--- a/libcpp/macro.c
+++ b/libcpp/macro.c
@@ -1,7 +1,7 @@
 /* Part of CPP library.  (Macro and #define handling.)
    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1998,
    1999, 2000, 2001, 2002, 2003, 2004, 2005,
-   2006, 2007 Free Software Foundation, Inc.
+   2006, 2007, 2008 Free Software Foundation, Inc.
    Written by Per Bothner, 1994.
    Based on CCCP program by Paul Rubin, June 1986
    Adapted to ANSI C, Richard Stallman, Jan 1987
@@ -451,7 +451,9 @@ paste_tokens (cpp_reader *pfile, const cpp_token **plhs, const cpp_token *rhs)
      false doesn't work, since we want to clear the PASTE_LEFT flag.  */
   if ((*plhs)->type == CPP_DIV && rhs->type != CPP_EQ)
     *end++ = ' ';
-  end = cpp_spell_token (pfile, rhs, end, false);
+  /* In one obscure case we might see padding here.  */
+  if (rhs->type != CPP_PADDING)
+    end = cpp_spell_token (pfile, rhs, end, false);
   *end = '\n';
 
   cpp_push_buffer (pfile, buf, end - buf, /* from_stage3 */ true);
@@ -514,8 +516,10 @@ paste_all_tokens (cpp_reader *pfile, const cpp_token *lhs)
        rhs = *FIRST (context).ptoken++;
 
       if (rhs->type == CPP_PADDING)
-       abort ();
-
+       {
+         if (rhs->flags & PASTE_LEFT)
+           abort ();
+       }
       if (!paste_tokens (pfile, &lhs, rhs))
        break;
     }
@@ -1691,7 +1695,14 @@ _cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node)
   /* Enter definition in hash table.  */
   node->type = NT_MACRO;
   node->value.macro = macro;
-  if (! ustrncmp (NODE_NAME (node), DSC ("__STDC_")))
+  if (! ustrncmp (NODE_NAME (node), DSC ("__STDC_"))
+      && ustrcmp (NODE_NAME (node), (const uchar *) "__STDC_FORMAT_MACROS")
+      /* __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS are mentioned
+        in the C standard, as something that one must use in C++.
+        However DR#593 indicates that these aren't actually mentioned
+        in the C++ standard.  We special-case them anyway.  */
+      && ustrcmp (NODE_NAME (node), (const uchar *) "__STDC_LIMIT_MACROS")
+      && ustrcmp (NODE_NAME (node), (const uchar *) "__STDC_CONSTANT_MACROS"))
     node->flags |= NODE_WARN;
 
   return ok;