From 0dbed0fd5908266fc66147619f9338e6ed7e7849 Mon Sep 17 00:00:00 2001
From: James Robson <jaggededgedjustice@gmail.com>
Date: Thu, 18 Feb 2021 21:10:53 +0000
Subject: [PATCH] Do not allow seq to run with an increment of zero

---
 src/uu/seq/src/seq.rs     | 4 ++++
 tests/by-util/test_seq.rs | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/src/uu/seq/src/seq.rs b/src/uu/seq/src/seq.rs
index 6a8a57a01..671dd7e1c 100644
--- a/src/uu/seq/src/seq.rs
+++ b/src/uu/seq/src/seq.rs
@@ -133,6 +133,10 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
     } else {
         1.0
     };
+    if increment == 0.0 {
+        show_error!("increment value: '{}'", &numbers[1][..]);
+        return 1;
+    }
     let last = {
         let slice = &numbers[numbers.len() - 1][..];
         padding = cmp::max(padding, slice.find('.').unwrap_or_else(|| slice.len()));
diff --git a/tests/by-util/test_seq.rs b/tests/by-util/test_seq.rs
index b1265121b..d4cff9aaa 100644
--- a/tests/by-util/test_seq.rs
+++ b/tests/by-util/test_seq.rs
@@ -40,3 +40,9 @@ fn test_equalize_widths() {
 fn test_seq_wrong_arg() {
     new_ucmd!().args(&["-w", "5", "10", "33", "32"]).fails();
 }
+
+#[test]
+fn test_zero_step() {
+    new_ucmd!().args(&["10", "0", "32"]).fails();
+}
+