Eliminate make_cleanup_obstack_free, introduce auto_obstack

[deliverable/binutils-gdb.git] / gdb / go-exp.y

diff --git a/gdb/go-exp.y b/gdb/go-exp.y
index 057e2277e808722f82c1351b8ddc2fb1c33359da..f2f359609cd783b40f73f329619d674c585dbe3e 100644 (file)
--- a/gdb/go-exp.y
+++ b/gdb/go-exp.y
@@ -1297,7 +1297,7 @@ static int popping;
 
 /* Temporary storage for yylex; this holds symbol names as they are
    built up.  */
-static struct obstack name_obstack;
+static auto_obstack name_obstack;
 
 /* Build "package.name" in name_obstack.
    For convenience of the caller, the name is NUL-terminated,
@@ -1309,7 +1309,7 @@ build_packaged_name (const char *package, int package_len,
 {
   struct stoken result;
 
-  obstack_free (&name_obstack, obstack_base (&name_obstack));
+  name_obstack.clear ();
   obstack_grow (&name_obstack, package, package_len);
   obstack_grow_str (&name_obstack, ".");
   obstack_grow (&name_obstack, name, name_len);
@@ -1567,6 +1567,8 @@ go_parse (struct parser_state *par_state)
   gdb_assert (par_state != NULL);
   pstate = par_state;
 
+  /* Note that parsing (within yyparse) freely installs cleanups
+     assuming they'll be run here (below).  */
   back_to = make_cleanup (null_cleanup, NULL);
 
   scoped_restore restore_yydebug = make_scoped_restore (&yydebug,
@@ -1579,8 +1581,7 @@ go_parse (struct parser_state *par_state)
 
   VEC_free (token_and_value, token_fifo);
   popping = 0;
-  obstack_init (&name_obstack);
-  make_cleanup_obstack_free (&name_obstack);
+  name_obstack.clear ();
 
   result = yyparse ();
   do_cleanups (back_to);