build dmd.2.029 on Redhat Linux9.0 error

[zsxxsz]

When I build dmd.2.029 compiler on Redhat Linux9.0, I got the warning as below:
func.c: In member function `virtual void
   StaticDtorDeclaration::semantic(Scope*)':
func.c:2777: warning: passing negative value `-1' for argument 1 of `
   IntegerExp::IntegerExp(long long unsigned int)'