[Minor] Fix crash on non resolving virtual dependency

diff --git a/src/libserver/rspamd_symcache.c b/src/libserver/rspamd_symcache.c
index ecafae89287687edde83284704de73969ffc7fb1..fedd2cf029dbef9df6965959332cdade295c3e6c 100644 (file)
--- a/src/libserver/rspamd_symcache.c
+++ b/src/libserver/rspamd_symcache.c
@@ -586,8 +586,15 @@ rspamd_symcache_process_dep (struct rspamd_symcache *cache,
        if (dep->vid >= 0) {
                /* Case of the virtual symbol that depends on another (maybe virtual) symbol */
                vdit = rspamd_symcache_find_filter (cache, dep->sym, false);
-               msg_debug_cache ("process virtual dependency %s(%d) on %s(%d)", it->symbol,
-                               dep->vid, vdit->symbol, vdit->id);
+
+               if (!vdit) {
+                       msg_err_cache ("cannot add dependency from %s on %s: no dependency symbol registered",
+                                       dep->sym, dit->symbol);
+               }
+               else {
+                       msg_debug_cache ("process virtual dependency %s(%d) on %s(%d)", it->symbol,
+                                       dep->vid, vdit->symbol, vdit->id);
+               }
        }
        else {
                vdit = dit;