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authorStavros Aronis <[email protected]>2012-04-23 16:38:57 +0200
committerHenrik Nord <[email protected]>2012-04-24 12:02:26 +0200
commit56e3930cf406228d1e946a38aa4e77c62e8badb3 (patch)
treee3384f3e6369e95ccdc683a7b4275e7abf34c43a /otp_build
parent3ab2dd6d490a3b0d1e8d8cad64b460e09b130c15 (diff)
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Correct handling of type names in contracts
Variables in contracts can either be true type variables or simply names for types thet are defined in the 'when' clauses. Consider the following example: -spec foo(X, Options) -> {ok, X} | error when Options :: [{atom(), boolean()}]. Here X is a true variable whereas Options is a name for a type that is defined in the when clause. 'when' clauses may further use names on the right side. These were not treated properly by Dialyzer and could be generalized to the term() type. This patch fixes this issue. A further issue is the treatment of true type variables, but this is left for another patch.
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