https://issues.dlang.org/show_bug.cgi?id=14198
--- Comment #4 from Walter Bright <[email protected]> --- Hmm, a reference to: _D3std4conv11__T2toTAyaZ9__T2toTbZ2toFbZAya is generated, but there's a: _D3std4conv11__T2toTAyaZ9__T2toTbZ2toFNaNfbZAya in Phobos. The difference is the latter is Na (pure) and Nf (@safe). So, somehow attribute inference is happening in the latter but not the former. --
