duration.cpp:96:7: error: no viable overloaded '-=' with nanotime 0.3.0 on Travis MacOS about nanotime

[eddelbuettel]

Uh-oh. We'll take a look. And make 0.3.1 if we need to.

[eddelbuettel]

Do we know "which" clang++ that is? clang++-9 on Ubuntu works fine (modulo some warnings...).

[eddelbuettel]

Same with -10.

[lsilvest]

The issue is that std::chrono::system_cock is defined with microseconds instead of nanoseconds like on the other platforms. Not a difficult fix: I have tested it with clang under MacOS, and g++ under Ubuntu and will test on Windows in the unlikely event it causes an issue there.

[eddelbuettel]

The issue is that std::chrono::system_cock is defined with microseconds instead of nanoseconds like on the other platforms.

Ah yes. I think I once knew that too. But now I don't recall how e.g. RcppCCTZ danced around it ...