Hi,
I'm using Apache Thrift and using the tutorial to codegen D, but the generated code doesn't compile with dmd v2.096.2. I submitted Thrift defect [1] but I'd like to try to help fix the issue.

The code is very generic and I'm looking for tips on which lines would need changed (or if you want to beat me to the fix, go ahead, but share!).
The backtrace below hints that the code in [2] isn't liked by [3].
Should I focus on the mixin and does anything jump out?


[1] https://issues.apache.org/jira/browse/THRIFT-3541
[2] https://github.com/apache/thrift/blob/0.9.3/lib/d/src/thrift/codegen/processor.d#L85
[3] https://github.com/apache/thrift/blob/0.9.3/lib/d/src/thrift/internal/codegen.d#L246

Here's a snippet of the log:
[1m../../lib/d/src/thrift/codegen/processor.d-mixin-85(107): [1;31mError: [mtemplate instance thrift.codegen.processor.TArgsStruct!(Calculator, "ping") error instantiating
[1m../../lib/d/src/thrift/codegen/processor.d-mixin-85(100): [1;31m       [minstantiated from here: process_ping!(TProtocol, TProtocol)
[1mserver.d(101): [1;31m       [minstantiated from here: TServiceProcessor!(Calculator)
[1m../../lib/d/src/thrift/codegen/processor.d-mixin-85(130): [1;31mError: [mtemplate instance thrift.codegen.processor.TResultStruct!(Calculator, "ping") error instantiating
[1m../../lib/d/src/thrift/codegen/processor.d-mixin-85(100): [1;31m       [minstantiated from here: process_ping!(TProtocol, TProtocol)
[1mserver.d(101): [1;31m       [minstantiated from here: TServiceProcessor!(Calculator)
[1m../../lib/d/src/thrift/codegen/base.d(472): [1;31mError: [minvalid foreach aggregate StaticFilter!(All, "key", "thrift", "This", "isSetFlags", "fieldMeta", "set", "unset", "isSet", "toString", "opEquals", "toHash", "thriftToStringImpl", "thriftOpEqualsImpl", "thriftToHashImpl", "read", "write")
[1m../../lib/d/src/thrift/internal/codegen.d(272): [1;31mError: [mtemplate instance thrift.internal.codegen.Target!(TArgsStruct!(SharedService, "getStruct"), "toHash") error instantiating
[1m../../lib/d/src/thrift/internal/codegen.d(361): [1;31m       [minstantiated from here: Template!"toHash"
[1m../../lib/d/src/thrift/internal/codegen.d(380): [1;31m       [minstantiated from here: Instantiate!(PApply, "toHash")
[1m../../lib/d/src/thrift/internal/codegen.d(361): [1;31m       [minstantiated from here: Template!"toHash"
[1m../../lib/d/src/thrift/internal/codegen.d(381): [1;31m       [m... (17 instantiations, -v to show)

I'm researching and found that facebook/fbthrift has the commit below which might work. I'll pull it in and see if it works.

"Make all fbcode D code compatible with dmd 2.068.0"
https://github.com/facebook/fbthrift/commit/aee392c7b8947712f4e3d0e3434dd3ee3d5f3540