impalad crashes with a dcheck while trying to insert data into a decimal partiion

[localhost:21000] > create table foo (i int) partitioned by (d Decimal);
[localhost:21000] > insert into table foo partition(d=1.0) select 1;
Query: insert into table foo partition(d=1.0) select 1
ERROR: AnalysisException: Possible loss of precision for target table 'default.foo'.   <-- this is ok (I think)
[localhost:21000] > insert into table foo partition(d=cast(1.0 as decimal)) select 1;
Query: insert into table foo partition(d=cast(1.0 as decimal)) select 1
Error communicating with impalad: TSocket read 0 bytes  <-- dcheck

F0520 15:59:53.591024 20815 expr.cc:473] Check failed: false bad GetValue() type: DECIMAL(9, 0)
*** Check failure stack trace: ***
    @          0x1def93d  google::LogMessage::Fail()
    @          0x1df20df  google::LogMessage::SendToLog()
    @          0x1def52b  google::LogMessage::Flush()
    @          0x1df296d  google::LogMessageFatal::~LogMessageFatal()
    @          0x1097982  impala::Expr::GetValue()
    @           0xeb77fa  Java_com_cloudera_impala_service_FeSupport_NativeEvalConstExpr
    @     0x7fc1f86f0af9  (unknown)