X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=read-cache.c;h=5820f18d9a79fd83ff5a418a5dfc68bbf7c5c354;hb=d59a6043a8a7aed97c684fb4f14fe5221df1fcaf;hp=f448ab17e279d2fb4e2cfa91cfc61be6f91128db;hpb=07ee0d77c66d6f356cd3f82435e67510779aa53c;p=git.git

diff --git a/read-cache.c b/read-cache.c
index f448ab17..5820f18d 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -392,7 +392,7 @@ int read_cache(void)
 		return (errno == ENOENT) ? 0 : error("open failed");
 
 	size = 0; // avoid gcc warning
-	map = (void *)-1;
+	map = MAP_FAILED;
 	if (!fstat(fd, &st)) {
 		size = st.st_size;
 		errno = EINVAL;
@@ -400,7 +400,7 @@ int read_cache(void)
 			map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
 	}
 	close(fd);
-	if (-1 == (int)(long)map)
+	if (map == MAP_FAILED)
 		return error("mmap failed");
 
 	hdr = map;