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Author: JukkaL

mypyc/lower/misc_ops.py

@@ -14,4 +14,5 @@ def var_object_size(builder: LowLevelIRBuilder, args: list[Value], line: int) ->
 
 @lower_primitive_op("propagate_if_error")
 def propagate_if_error_op(builder: LowLevelIRBuilder, args: list[Value], line: int) -> Value:
+    # Return False on NULL. The primitive uses ERR_FALSE, so this is an error.
     return builder.add(ComparisonOp(args[0], Integer(0, object_rprimitive), ComparisonOp.NEQ))