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-rw-r--r--src/or/routerlist.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index 7904559fb4..46b4e2485a 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -2934,7 +2934,9 @@ router_differences_are_cosmetic(routerinfo_t *r1, routerinfo_t *r2)
crypto_pk_cmp_keys(r1->onion_pkey, r2->onion_pkey) ||
crypto_pk_cmp_keys(r1->identity_pkey, r2->identity_pkey) ||
strcasecmp(r1->platform, r2->platform) ||
- strcasecmp(r1->contact_info, r2->contact_info) ||
+ (r1->contact_info && !r2->contact_info) || /* contact_info is optional */
+ (!r1->contact_info && r2->contact_info) ||
+ (r1->contact_info && r2->contact_info && strcasecmp(r1->contact_info, r2->contact_info)) ||
r1->is_hibernating != r2->is_hibernating ||
config_cmp_addr_policies(r1->exit_policy, r2->exit_policy))
return 0;