Document the from_str_radix panic

tbu- · tbu- · commit bbb5311ad692 · 2017-07-30T23:20:54.000+02:00
CC #42034
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
@@ -131,6 +131,10 @@ macro_rules! int_impl {
         ///
         /// Leading and trailing whitespace represent an error.
         ///
+        /// # Panics
+        ///
+        /// This function panics if `radix` is not in the range from 2 to 36.
+        ///
         /// # Examples
         ///
         /// Basic usage:
