From 950b90abcd94adc9a81aff24e413529d94445d7f Mon Sep 17 00:00:00 2001
From: Kuang-che Wu <kcwu@google.com>
Date: Sun, 30 Mar 2025 16:04:01 +0000
Subject: [PATCH] avoid import already imported foreign corpus

If no new foreign cases, mtime_max is 0 and this incorrectly reset last
import mtime.
---
 src/afl-fuzz-init.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/afl-fuzz-init.c b/src/afl-fuzz-init.c
index d8e7169d..f31511ff 100644
--- a/src/afl-fuzz-init.c
+++ b/src/afl-fuzz-init.c
@@ -668,7 +668,12 @@ void read_foreign_testcases(afl_state_t *afl, int first) {
 
       }
 
-      afl->foreign_syncs[iter].mtime = mtime_max;
+      if (mtime_max > afl->foreign_syncs[iter].mtime) {
+
+        afl->foreign_syncs[iter].mtime = mtime_max;
+
+      }
+
       free(nl);                                              /* not tracked */
 
     }