X-Git-Url: http://git.claws-mail.org/?p=claws.git;a=blobdiff_plain;f=src%2Fprocmsg.c;h=ef9b94793973cd93210463888d6d6ccdf0c4a296;hp=b8cbc6c6099fb77be3f7c8c13b0f470f6648c0a9;hb=0aa9df89b9f861fe5a25fa038ff6cdca5ab0d492;hpb=c0f102456a092d8da94b6fecbad027343813c7db

diff --git a/src/procmsg.c b/src/procmsg.c
index b8cbc6c60..ef9b94793 100644
--- a/src/procmsg.c
+++ b/src/procmsg.c
@@ -172,13 +172,17 @@ static GNode *subject_relation_lookup(GRelation *relation, MsgInfo *msginfo)
 	gchar *subject;
 	GTuples *tuples;
 	GNode *node = NULL;
+	gint prefix_length;
     
 	g_return_val_if_fail(relation != NULL, NULL);
 
 	subject = msginfo->subject;
 	if (subject == NULL)
 		return NULL;
-	subject += subject_get_prefix_length(subject);
+	prefix_length = subject_get_prefix_length(subject);
+	if (prefix_length <= 0)
+		return NULL;
+	subject += prefix_length;
 	
 	tuples = g_relation_select(relation, subject, 0);
 	if (tuples == NULL)