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fix #3958

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-14 06:34:03 -07:00
parent 387964f508
commit d7d6877031
1 changed files with 2 additions and 1 deletions
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3
src/ast/datatype_decl_plugin.cpp
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@ -1140,7 +1140,8 @@ namespace datatype {
TRACE("util_bug", tout << "invoke get-non-rec: " << sort_ref(ty, m) << "\n";);
cd = get_non_rec_constructor_core(ty, forbidden_set);
SASSERT(forbidden_set.back() == ty);
SASSERT(cd.first);
if (!cd.first) // datatypes are not completed on parse errors
throw default_exception("constructor not available");
return cd.first;
}