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https://issues.apache.org/jira/browse/THRIFT-1532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13223591#comment-13223591
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Björn Bylander commented on THRIFT-1532:
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I've added agent.tar.gz. Unpack and then compile using "rebar compile".
"dialyzer ebin" outputs the following:
agent_service.erl:34: Function 'GetSomeStruct'/0 has no local return
agent_service.erl:35: Record construction #someStruct{id::42} violates the
declared type of field anI32::integer()
Unknown functions:
thrift_server:start_link/3
thrift_server:stop/1
done in 0m0.61s
done (warnings were emitted)
Removing the undefined default value from the "anI32" field in agent_types.hrl
removes the Dialyzer error.
> The type specifications in the generated Erlang code should include
> "undefined" where it's used as a default value
> ------------------------------------------------------------------------------------------------------------------
>
> Key: THRIFT-1532
> URL: https://issues.apache.org/jira/browse/THRIFT-1532
> Project: Thrift
> Issue Type: Improvement
> Components: Erlang - Compiler
> Affects Versions: 0.8
> Environment: Erlang/OTP R15B.
> Reporter: Björn Bylander
> Assignee: Anthony Molinaro
> Priority: Minor
> Labels: compiler, dialyzer, erlang, specification, type
> Attachments: THRIFT-1532_type_allows_undefined.patch, agent.tar.gz
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> The Erlang code generated by the compiler for, for example, an integer field
> of a struct sets a default value of 'undefined' but the type to just
> 'integer()' which doesn't include the default value. This makes Dialyzer
> complain if the field has not been initialized as it gets set to 'undefined'
> instead of an integer value.
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