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This patch fixes a bug in which if a derived type has a Default_Iterator specified, and the parent type does not, then a "for ... of" loop causes the compiler to crash. No small test case available. Tested on x86_64-pc-linux-gnu, committed on trunk 2017-09-06 Bob Duff <duff@adacore.com> * exp_ch5.adb (Get_Default_Iterator): Replace "Assert(False)" with "return Iter", because if an iterable type is derived from a noniterable one, then we won't find an overriding or inherited default iterator.
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