Inline method generates internal error GOUNKEX170

The following code contains two static methods, InRange1 and InRange2. They are equal, except that the latter is labelled “inline”. The former compiles and works well, while the latter generates “Internal error GOUNKEX170” where indicated.

interface

type TestInline = public static class
public
  method InRange1(aNum, aLow, aHigh: Integer): Boolean;
  method InRange2(aNum, aLow, aHigh: Integer): Boolean; inline;
end;

implementation

method TestInline.InRange1(aNum: Integer; aLow: Integer; aHigh: Integer): Boolean;
begin
  exit aLow <= aNum <= aHigh;
end;

method TestInline.InRange2(aNum: Integer; aLow: Integer; aHigh: Integer): Boolean;
begin
  exit aLow <= aNum <= aHigh;  // <<== Internal error: GOUNKEX170
end;

Thanks, logged as bugs://78064

bugs://78064 got closed with status fixed.