From: Sergey Matveev <stargrave@stargrave.org>
Date: Fri, 18 Oct 2024 10:15:01 +0000 (+0300)
Subject: Trivial usage help
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=b3ec0b6ca056a16edf2e50256a13de8d0dc030718480eee2071fabc66dcf2c67;p=keks.git

Trivial usage help
---

diff --git a/cyac/cmd/print-items/print-items.c b/cyac/cmd/print-items/print-items.c
index 3519091..b314cb3 100644
--- a/cyac/cmd/print-items/print-items.c
+++ b/cyac/cmd/print-items/print-items.c
@@ -254,6 +254,10 @@ printer(
 int
 main(int argc, char **argv)
 {
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s FILE\n", argv[0]);
+        return EXIT_FAILURE;
+    }
     size_t len = 0;
     unsigned char *buf = NULL;
     if (!Mmap(&buf, &len, argv[1])) {
diff --git a/cyac/cmd/print-itered/print-itered.c b/cyac/cmd/print-itered/print-itered.c
index ed2758b..c9923e7 100644
--- a/cyac/cmd/print-itered/print-itered.c
+++ b/cyac/cmd/print-itered/print-itered.c
@@ -156,6 +156,10 @@ myCb(
 int
 main(int argc, char **argv)
 {
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s FILE\n", argv[0]);
+        return EXIT_FAILURE;
+    }
     size_t len = 0;
     unsigned char *buf = NULL;
     if (!Mmap(&buf, &len, argv[1])) {