Pretty print null MonoGenericContext's in xdebug correctly.

diff --git a/data/gdb/mono-gdb.py b/data/gdb/mono-gdb.py
index 793d83464c77521975d76854d63711758077d608..03069bd62e80072b9ec792e7fe64640c10cda269 100644 (file)
--- a/data/gdb/mono-gdb.py
+++ b/data/gdb/mono-gdb.py
@@ -188,6 +188,8 @@ class MonoGenericInstPrinter:
         self.val = val
 
     def to_string(self):
+        if int(self.val.cast (gdb.lookup_type ("guint64"))) == 0:
+            return "0x0"
         inst = self.val.dereference ()
         inst_len = inst ["type_argc"]
         inst_args = inst ["type_argv"]