From c0e87f13a4d2f6fcef92c8c01bdc8dda9e0549a5 Mon Sep 17 00:00:00 2001
From: varkor <github@varkor.com>
Date: Thu, 15 Feb 2018 15:54:40 +0000
Subject: Make ".e0" not parse as 0.0

This forces floats to have either a digit before the separating point, or after. Thus ".e0" is invalid like ".", when using `parse()`.
---
 src/libcore/tests/num/dec2flt/mod.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/libcore/tests')

diff --git a/src/libcore/tests/num/dec2flt/mod.rs b/src/libcore/tests/num/dec2flt/mod.rs
index 9934e1dab96..17b2f59cd4d 100644
--- a/src/libcore/tests/num/dec2flt/mod.rs
+++ b/src/libcore/tests/num/dec2flt/mod.rs
@@ -101,6 +101,12 @@ fn lonely_dot() {
     assert!(".".parse::<f64>().is_err());
 }
 
+#[test]
+fn exponentiated_dot() {
+    assert!(".e0".parse::<f32>().is_err());
+    assert!(".e0".parse::<f64>().is_err());
+}
+
 #[test]
 fn lonely_sign() {
     assert!("+".parse::<f32>().is_err());
-- 
cgit 1.4.1-3-g733a5