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Avoid crashing if we call num_usable_bridges() when bridges are not enabled

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This applies the changes in 23524 to num_usable_bridges(), because it has
replaced any_bridge_descriptors_known().

The original changes file still applies.
This commit is contained in:
teor 2017-11-22 02:01:51 +11:00
parent 690f646bf8
commit d7833c9d27
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1 changed files with 6 additions and 2 deletions
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8
src/or/entrynodes.c
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@ -3145,9 +3145,13 @@ num_bridges_usable,(void))
{
int n_options = 0;
tor_assert(get_options()->UseBridges);
if (BUG(!get_options()->UseBridges)) {
return 0;
}
guard_selection_t *gs = get_guard_selection_info();
tor_assert(gs->type == GS_TYPE_BRIDGE);
if (BUG(gs->type != GS_TYPE_BRIDGE)) {
return 0;
}
SMARTLIST_FOREACH_BEGIN(gs->sampled_entry_guards, entry_guard_t *, guard) {
if (guard->is_reachable == GUARD_REACHABLE_NO)