Andreas Sandberg has uploaded this change for review. ( https://gem5-review.googlesource.com/c/public/gem5/+/15990

Change subject: python: Fix Param initialization issue in Python 3
......................................................................

python: Fix Param initialization issue in Python 3

When initializing a param with a SimObject NULL pointer, convert()
checks if the 'ptype' attribute has been created and whether the value
is NULL. In that case, it assumes that the object is being
initizalized as a part of SimObject initialization and defers the
conversion. This check is implemented using hasattr() which in turn is
implemented using the __getattr__ implementation that asserts because
all SimObjects haven't been initialized yet.

Implement the check using a lookup in the object's dictionary instead
to prevent the SimObject lookup.

Change-Id: I7367563c4fb71f6d2be541ebdc0be418e9f73d48
Signed-off-by: Andreas Sandberg <[email protected]>
---
M src/python/m5/params.py
1 file changed, 1 insertion(+), 1 deletion(-)



diff --git a/src/python/m5/params.py b/src/python/m5/params.py
index d6641bd..f1ac344 100644
--- a/src/python/m5/params.py
+++ b/src/python/m5/params.py
@@ -206,7 +206,7 @@
         if isinstance(value, proxy.BaseProxy):
             value.set_param_desc(self)
             return value
-        if not hasattr(self, 'ptype') and isNullPointer(value):
+        if 'ptype' not in self.__dict__ and isNullPointer(value):
             # deferred evaluation of SimObject; continue to defer if
             # we're just assigning a null pointer
             return value

--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I7367563c4fb71f6d2be541ebdc0be418e9f73d48
Gerrit-Change-Number: 15990
Gerrit-PatchSet: 1
Gerrit-Owner: Andreas Sandberg <[email protected]>
Gerrit-MessageType: newchange
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