Fixes bpo-29680: Older gdb does not have gdb.error. (#363)

This change is required to make python-dbg.py compatible with GDB versions before 7.3.

diff --git a/Tools/gdb/libpython.py b/Tools/gdb/libpython.py
index 4f452561882e769b444b56f7301b07f047898951..0e9df2bd52f1f4fd0c75c02fad7e226260c5b3c9 100755 (executable)
--- a/Tools/gdb/libpython.py
+++ b/Tools/gdb/libpython.py
@@ -715,7 +715,7 @@ class PyDictObjectPtr(PyObjectPtr):
         try:
             # <= Python 3.5
             return keys['dk_entries'], dk_size
-        except gdb.error:
+        except RuntimeError:
             # >= Python 3.6
             pass