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[PATCH 1/3] Fix http://sourceware.org/bugzilla/show_bug.cgi?id=14550


---
 gdb/ChangeLog |    7 +++++++
 gdb/jit.c     |   14 ++++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4ab15c4..a1c55e5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2012-09-18  Sanjoy Das <sanjoy@playingwithpointers.com>
+
+	PR gdb/14550
+
+	* jit.c (finalize_symtab): Ensure that only the global block has a
+	NULL superblock.
+
 2012-09-17  Mike Wrighton  <wrighton@codesourcery.com>
 
 	* MAINTAINERS (Write After Approval): Add "Mike Wrighton".
diff --git a/gdb/jit.c b/gdb/jit.c
index 9e8f295..2f9d426 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -724,8 +724,18 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
        gdb_block_iter = gdb_block_iter->next)
     {
       if (gdb_block_iter->parent != NULL)
-        BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
-          gdb_block_iter->parent->real_block;
+	{
+	  /* If the plugin specifically mentioned a parent block, we
+	     use that */
+	  BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
+	    gdb_block_iter->parent->real_block;
+	}
+      else
+	{
+	  /* and if not, we set a default parent block. */
+	  BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
+	    BLOCKVECTOR_BLOCK (symtab->blockvector, STATIC_BLOCK);
+	}
     }
 
   /* Free memory.  */
-- 
1.7.10.4


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