This code (reduced from std.math) causes a stack overflow when trying to get a tooltip for Num.alignof:
import std.meta : AliasSeq;
deprecated("Please use std.complex")
static foreach (Num; AliasSeq!(cfloat, cdouble, creal, ifloat, idouble, ireal))
{
auto abs(Num z) @safe pure nothrow @nogc
{
enum m = Num.alignof;
return m;
}
}