String to NativeUtf8 issues

[fayfive]

Platform: Ubuntu 18.04
Dart SDK version: 2.17.3

Pointer<Char> url ="http://172.16.5.12/index".toNativeUtf8().cast<Char>();
and then I printf in C. Sometimes, it show that http://172.16.5.12/index\\07

I must do that url.elementAt("http://172.16.5.12/index".length).value = 0;

I don't knwo if it works well.

[dcharkes]

We should already be doing that

nativeString[units.length] = 0;

https://github.com/dart-lang/ffi/blob/master/lib/src/utf8.dart#L86

Could you make a minimal reproduction to ensure that it's not other code causing this?

Does it repro with:

• test zero termination of Utf8 string #147

[fayfive]

It's my mistake.