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check for zero epsilon or backref pointers

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This commit is contained in:
Krasimir Angelov
2022-10-04 12:04:18 +02:00
parent e2a7974853
commit b39f481316
1 changed files with 6 additions and 0 deletions
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6
src/runtime/c/pgf/parser.cxx
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@@ -167,6 +167,9 @@ public:
static void bu_predict(ref<PgfLincatField> field, State *state, Choice *choice) static void bu_predict(ref<PgfLincatField> field, State *state, Choice *choice)
{ {
if (field->backrefs == 0)
return;
for (size_t i = 0; i < field->backrefs->len; i++) { for (size_t i = 0; i < field->backrefs->len; i++) {
ref<PgfLincatBackref> backref = vector_elem(field->backrefs, i); ref<PgfLincatBackref> backref = vector_elem(field->backrefs, i);
@@ -187,6 +190,9 @@ public:
static void eps_predict(ref<PgfLincatField> field, State *state, ParseItemConts *conts, prob_t outside_prob) static void eps_predict(ref<PgfLincatField> field, State *state, ParseItemConts *conts, prob_t outside_prob)
{ {
if (field->epsilons == 0)
return;
for (size_t i = 0; i < field->epsilons->len; i++) { for (size_t i = 0; i < field->epsilons->len; i++) {
ref<PgfLincatEpsilon> epsilon = vector_elem(field->epsilons, i); ref<PgfLincatEpsilon> epsilon = vector_elem(field->epsilons, i);
size_t n_args = epsilon->lin->absfun->type->hypos->len; size_t n_args = epsilon->lin->absfun->type->hypos->len;