[committed] d: Remove another dependency on the front-end OutBuffer type.

[Iain Buclaw via Gcc-patches]

Hi,

This patch removes another dependency on the front-end OutBuffer type.

As the DMD front-end never frees allocated memory, the glue layer
between the DMD front-end and GCC should generally avoid using DMD types
and interfaces if the purpose is internal only.

Bootstrapped and regression tested on x86_64-linux-gnu, and committed to
mainline.

Regards
Iain.

---
gcc/d/ChangeLog:

        * d-lang.cc (d_parse_file): Replace OutBuffer with obstack.
---
 gcc/d/d-lang.cc | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/gcc/d/d-lang.cc b/gcc/d/d-lang.cc
index e4d0a24c65c..2c474f8adea 100644
--- a/gcc/d/d-lang.cc
+++ b/gcc/d/d-lang.cc
@@ -1032,18 +1032,20 @@ d_parse_file (void)
       message ("binary    %s", global.params.argv0.ptr);
       message ("version   %s", global.version.ptr);
 
-      if (global.params.versionids)
+      if (global.versionids)
        {
-         OutBuffer buf;
-         buf.writestring ("predefs  ");
-         for (size_t i = 0; i < global.params.versionids->length; i++)
+         obstack buffer;
+         gcc_obstack_init (&buffer);
+         obstack_grow (&buffer, "predefs  ", 9);
+         for (size_t i = 0; i < global.versionids->length; i++)
            {
-             const char *s = (*global.params.versionids)[i];
-             buf.writestring (" ");
-             buf.writestring (s);
+             Identifier *id = (*global.versionids)[i];
+             const char *str = id->toChars ();
+             obstack_1grow (&buffer, ' ');
+             obstack_grow (&buffer, str, strlen (str));
            }
 
-         message ("%s", buf.peekChars ());
+         message ("%s", (char *) obstack_finish (&buffer));
        }
     }
 
-- 
2.25.1