From 6ed0a2b4aa0c22f95ba723cfda5b1fb79a224bc8 Mon Sep 17 00:00:00 2001
From: vanhauser-thc <vh@thc.org>
Date: Mon, 10 Jun 2024 18:22:06 +0200
Subject: fast resume setup detection

---
 src/afl-performance.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/afl-performance.c')

diff --git a/src/afl-performance.c b/src/afl-performance.c
index e8ece6b5..b824fd35 100644
--- a/src/afl-performance.c
+++ b/src/afl-performance.c
@@ -99,11 +99,13 @@ inline u64 hash64(u8 *key, u32 len, u64 seed) {
 
 u64 get_binary_hash(u8 *fn) {
 
+  if (!fn) { return 0; }
   int fd = open(fn, O_RDONLY);
   if (fd < 0) { PFATAL("Unable to open '%s'", fn); }
   struct stat st;
   if (fstat(fd, &st) < 0) { PFATAL("Unable to fstat '%s'", fn); }
   u32 f_len = st.st_size;
+  if (!f_len) { return 0; }
   u8 *f_data = mmap(0, f_len, PROT_READ, MAP_PRIVATE, fd, 0);
   if (f_data == MAP_FAILED) { PFATAL("Unable to mmap file '%s'", fn); }
   close(fd);
-- 
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