jsapi-tests/testFuncCallback.cpp has this code:
// If this fails, it means that the code was interpreted rather
// than trace-JITted, and so is not testing what it's supposed to
// be testing. Which doesn't necessarily imply that the
// functionality is broken.
CHECK(interpreted < enters);
That code isn't compiled even if SpiderMonkey was compiled with --enable-tracejit. I think js-confdefs.h or js-config.h needs to be #included somewhere.
code is gone