kat, tak: handle open_map errors

1 files changed, 3 insertions, 0 deletions

diff --git a/src/tak.c b/src/tak.c
index caf1837..06fc35e 100644
--- a/src/tak.c
+++ b/src/tak.c
@@ -19,6 +19,9 @@ int entry_tak(int argc, char **argv) {
   for (int i = argc-1; i >= 1; i--) {
     const char *fname = argv[i];
     struct map *map = open_map(fname);
+    if (map == NULL) {
+      return 1;
+    }
 
     char *lstart, *lend;
     lend = &map->addr[map->sb.st_size - 1];