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fix(library/type_context): check for stack overflow

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This commit is contained in:
Gabriel Ebner 2017-05-29 14:58:05 +02:00
parent 5ab28548b8
commit d5c7d078eb
1 changed files with 1 additions and 0 deletions
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src/library/type_context.cpp
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@ -2718,6 +2718,7 @@ bool type_context::on_is_def_eq_failure(expr const & e1, expr const & e2) {
/* If e is a numeral, then return it. Otherwise return none. */
static optional<mpz> eval_num(expr const & e) {
check_system("eval_num");
if (is_constant(e, get_nat_zero_name())) {
return some(mpz(0));
} else if (is_app_of(e, get_has_zero_zero_name(), 2)) {