flag: improve comment for calling String with zero value

Update golang#16694. Change-Id: Id6be1535d8a146b3dac3bee429ce407a51272032 Reviewed-on: https://go-review.googlesource.com/27634 Run-TryBot: Ian Lance Taylor <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Rob Pike <[email protected]>
rathangeorge · Aug 23, 2016 · 8050782 · 8050782
1 parent 78fac02
commit 8050782
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/flag/flag.go b/src/flag/flag.go
@@ -238,7 +238,8 @@ func (d *durationValue) String() string { return (*time.Duration)(d).String() }
 // rather than using the next command-line argument.
 //
 // Set is called once, in command line order, for each flag present.
-// String must work on the zero value of the dynamic type.
+// The flag package may call the String method with a zero-valued receiver,
+// such as a nil pointer.
 type Value interface {
  String() string
  Set(string) error