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fix(library/type_context): make sure code doesn't fail if local decl does not exist

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This commit is contained in:
Leonardo de Moura 2016-06-13 12:26:03 -07:00
parent db5d0d52c5
commit 695bba6291
1 changed files with 5 additions and 4 deletions
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9
src/library/type_context.cpp
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@ -209,10 +209,11 @@ type_context::~type_context() {
name type_context::get_local_pp_name(expr const & e) const {
lean_assert(is_local(e));
if (is_local_decl_ref(e))
return m_lctx.get_local_decl(e)->get_pp_name();
else
return local_pp_name(e);
if (is_local_decl_ref(e)) {
if (auto d = m_lctx.get_local_decl(e))
return d->get_pp_name();
}
return local_pp_name(e);
}
expr type_context::push_local(name const & pp_name, expr const & type, binder_info const & bi) {