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fix #5289

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This commit is contained in:
Nikolaj Bjorner 2021-05-30 10:32:30 -07:00
parent 4d41db2920
commit b1606487f0
9 changed files with 88 additions and 41 deletions
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14
src/ast/recfun_decl_plugin.cpp
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@ -54,7 +54,9 @@ namespace recfun {
unsigned arity, sort* const * domain, sort* range, bool is_generated)
: m(m), m_name(s),
m_domain(m, arity, domain),
m_range(range, m), m_vars(m), m_cases(),
m_range(range, m),
m_vars(m),
m_cases(),
m_decl(m),
m_rhs(m),
m_fid(fid)
@ -413,6 +415,16 @@ namespace recfun {
m_defs.insert(d->get_decl(), d);
return promise_def(&u(), d);
}
void plugin::erase_def(func_decl* f) {
def* d = nullptr;
if (m_defs.find(f, d)) {
for (case_def & c : d->get_cases())
m_case_defs.erase(c.get_decl());
m_defs.erase(f);
dealloc(d);
}
}
void plugin::set_definition(replace& r, promise_def & d, unsigned n_vars, var * const * vars, expr * rhs) {
u().set_definition(r, d, n_vars, vars, rhs);

2
src/ast/recfun_decl_plugin.h
View file

@ -186,6 +186,8 @@ namespace recfun {
def* mk_def(replace& subst, symbol const& name, unsigned n, sort ** params, sort * range, unsigned n_vars, var ** vars, expr * rhs);
void erase_def(func_decl* f);
bool has_def(func_decl* f) const { return m_defs.contains(f); }
bool has_defs() const;
def const& get_def(func_decl* f) const { return *(m_defs[f]); }

2
src/ast/rewriter/var_subst.cpp
View file

@ -25,7 +25,7 @@ Notes:
expr_ref var_subst::operator()(expr * n, unsigned num_args, expr * const * args) {
expr_ref result(m_reducer.m());
if (is_ground(n)) {
if (is_ground(n) || num_args == 0) {
result = n;
//application does not have free variables or nested quantifiers.
//There is no need to print the bindings here?