[SCM] archer-tromey-dwz-multifile: fix binary search thinko

[tromey@sourceware.org]

The branch, archer-tromey-dwz-multifile has been updated
       via  ed604dd3d75f53284ea11af3354ba0a415f4aef8 (commit)
       via  89cdd03a520f5b43da5cb49133f65a27516a4fb4 (commit)
      from  ee8d9d8801288fb677620e6bfe6e3df888605e81 (commit)

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- Log -----------------------------------------------------------------
commit ed604dd3d75f53284ea11af3354ba0a415f4aef8
Author: Tom Tromey <tromey@redhat.com>
Date:   Wed Jun 6 12:40:43 2012 -0600

    fix binary search thinko

commit 89cdd03a520f5b43da5cb49133f65a27516a4fb4
Author: Tom Tromey <tromey@redhat.com>
Date:   Wed Jun 6 11:47:37 2012 -0600

    specially handle DW_FORM_GNU_ref_alt when looking up a type
    
    previous we were not dealing properly with the dwz/not-dwz distinction here

-----------------------------------------------------------------------

Summary of changes:
 gdb/dwarf2read.c |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

First 500 lines of diff:
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index cbb5d20..37ff4c2 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -14081,7 +14081,15 @@ lookup_die_type (struct die_info *die, struct attribute *attr,
 
   /* First see if we have it cached.  */
 
-  if (is_ref_attr (attr))
+  if (attr->form == DW_FORM_GNU_ref_alt)
+    {
+      struct dwarf2_per_cu_data *per_cu;
+      sect_offset offset = dwarf2_get_ref_die_offset (attr);
+
+      per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile);
+      this_type = get_die_type_at_offset (offset, per_cu);
+    }
+  else if (is_ref_attr (attr))
     {
       sect_offset offset = dwarf2_get_ref_die_offset (attr);
 
@@ -16867,8 +16875,8 @@ dwarf2_find_containing_comp_unit (sect_offset offset,
 
       mid_cu = dwarf2_per_objfile->all_comp_units[mid];
       cu_off = &mid_cu->offset;
-      if (mid_cu->is_dwz > offset_in_dwz
-	  || cu_off->sect_off >= offset.sect_off)
+      if (mid_cu->is_dwz >= offset_in_dwz
+	  && cu_off->sect_off >= offset.sect_off)
 	high = mid;
       else
 	low = mid + 1;


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