I'm trying to type IPA symbols into LaTeX for the first time (instead of using tipa) and for some reason, the IPA symbols aren't being recognized like I want them to. I'm using Charis SIL, compiling in XeLaTeX (but LuaLaTeX produces the same result) and the basic code is this:
\documentclass[11pt]{article}
\usepackage{fontspec}
\setmainfont{Charis SIL}
\begin{document}
dʒa
\end{document}
...which produces 'd?a' instead of 'dʒa' in the PDF:
Any suggestions for how to fix this?