From e8d4228614e4f45f74a5233eb7a322494429fd22 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Mon, 7 Oct 2019 15:35:28 +0200
Subject: signing: handle unknown uid in key import

With unknown uid pacman crashed. Return with error from email_from_uid()
if uid is NULL.

Signed-off-by: Christian Hesse <mail@eworm.de>
Signed-off-by: Allan McRae <allan@archlinux.org>
---
 lib/libalpm/signing.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c
index f9569ac5..30d057a3 100644
--- a/lib/libalpm/signing.c
+++ b/lib/libalpm/signing.c
@@ -478,6 +478,11 @@ static int email_from_uid(const char *uid, char **email)
 {
        char *start, *end;
 
+       if (uid == NULL) {
+               email = NULL;
+               return -1;
+       }
+
        start = strrchr(uid, '<');
        if(start) {
                end = strrchr(start, '>');
-- 
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