* dwarf2read.c (psymtabs_addrmap_cleanup): New function.

	(dwarf2_build_psymtabs_hard): Use it.  Create addrmap on a
	temporary obstack.

2 files changed, 24 insertions, 3 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5079f8a..db4a2c5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2010-06-17  Tom Tromey  <tromey@redhat.com>
+
+	* dwarf2read.c (psymtabs_addrmap_cleanup): New function.
+	(dwarf2_build_psymtabs_hard): Use it.  Create addrmap on a
+	temporary obstack.
+
 2010-06-16  Sergio Durigan Junior  <sergiodj@redhat.com>
 	    Jan Kratochvil  <jan.kratochvil@redhat.com>
 
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 297138c..9723ea2 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -1995,6 +1995,15 @@ build_type_psymtabs (struct objfile *objfile)
 			  process_type_comp_unit, objfile);
 }
 
+/* A cleanup function that clears objfile's psymtabs_addrmap field.  */
+
+static void
+psymtabs_addrmap_cleanup (void *o)
+{
+  struct objfile *objfile = o;
+  objfile->psymtabs_addrmap = NULL;
+}
+
 /* Build the partial symbol table by doing a quick pass through the
    .debug_info and .debug_abbrev sections.  */
 
@@ -2002,7 +2011,8 @@ static void
 dwarf2_build_psymtabs_hard (struct objfile *objfile)
 {
   gdb_byte *info_ptr;
-  struct cleanup *back_to;
+  struct cleanup *back_to, *addrmap_cleanup;
+  struct obstack temp_obstack;
 
   dwarf2_read_section (objfile, &dwarf2_per_objfile->info);
   info_ptr = dwarf2_per_objfile->info.buffer;
@@ -2015,8 +2025,12 @@ dwarf2_build_psymtabs_hard (struct objfile *objfile)
 
   create_all_comp_units (objfile);
 
-  objfile->psymtabs_addrmap =
-    addrmap_create_mutable (&objfile->objfile_obstack);
+  /* Create a temporary address map on a temporary obstack.  We later
+     copy this to the final obstack.  */
+  obstack_init (&temp_obstack);
+  make_cleanup_obstack_free (&temp_obstack);
+  objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack);
+  addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile);
 
   /* Since the objects we're extracting from .debug_info vary in
      length, only the individual functions to extract them (like
@@ -2048,6 +2062,7 @@ dwarf2_build_psymtabs_hard (struct objfile *objfile)
 
   objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap,
 						    &objfile->objfile_obstack);
+  discard_cleanups (addrmap_cleanup);
 
   do_cleanups (back_to);
 }