From d58f1cc0f1af515ea53de784efef29315615698b Mon Sep 17 00:00:00 2001
From: Nicolas Boichat <nicolas@boichat.ch>
Date: Fri, 21 Mar 2025 21:57:41 +0100
Subject: [PATCH] test_seq: Modify undefined behaviour tests

GNU `seq` doesn't support such large positive exponents anyway,
and we are limited by i64 range, so increase the exponent value
to make sure we fully overflow that range.

Also, add a test to check that a very, very, small number is
treated as 0 (that's also undefined behaviour, but it does
make sense in a way).
---
 tests/by-util/test_seq.rs | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/tests/by-util/test_seq.rs b/tests/by-util/test_seq.rs
index 83bdb7a82..01ccfc11f 100644
--- a/tests/by-util/test_seq.rs
+++ b/tests/by-util/test_seq.rs
@@ -752,21 +752,23 @@ fn test_undefined() {
 
 #[test]
 fn test_invalid_float_point_fail_properly() {
+    // Note that we support arguments that are much bigger than what GNU coreutils supports.
+    // Tests below use exponents larger than we support (i64)
     new_ucmd!()
-        .args(&["66000e000000000000000000000000000000000000000000000000000009223372036854775807"])
+        .args(&["66000e0000000000000000000000000000000000000000000000000000092233720368547758070"])
         .fails()
         .no_stdout()
-        .usage_error("invalid floating point argument: '66000e000000000000000000000000000000000000000000000000000009223372036854775807'");
+        .usage_error("invalid floating point argument: '66000e0000000000000000000000000000000000000000000000000000092233720368547758070'");
     new_ucmd!()
-        .args(&["-1.1e9223372036854775807"])
+        .args(&["-1.1e92233720368547758070"])
         .fails()
         .no_stdout()
-        .usage_error("invalid floating point argument: '-1.1e9223372036854775807'");
+        .usage_error("invalid floating point argument: '-1.1e92233720368547758070'");
     new_ucmd!()
-        .args(&["-.1e9223372036854775807"])
+        .args(&["-.1e92233720368547758070"])
         .fails()
         .no_stdout()
-        .usage_error("invalid floating point argument: '-.1e9223372036854775807'");
+        .usage_error("invalid floating point argument: '-.1e92233720368547758070'");
 }
 
 #[test]