[Lazarus] Fixes 2.6.2 cod breaks 2.6.0 code?

[Frank Church]

Upgrading to Lazarus 1.0.7 with FPC 2.6.2 raised this error in a file
I was compiling? What does it mean?

procedure TRxDBGrid.CheckNewCachedSizes(var AGCache: TGridDataCache);
begin
  if (rdgFooterRows in OptionsRx) and (FooterRowCount > 0) then
    Dec(GCache.ClientHeight, DefaultRowHeight * FooterRowCount + 2);
end;

M:\Lazarus\ThirdPartyLibs\rx20\rxdbgrid.pas(2492,9) Error: Can't take
the address of constant expressions


Is the fixes branch supposed to introduce new functionality that can
break code that compiled in previous releases? I thought it excludes
changes that break existing code, ie, it should fix buggy code
generation, but not introduce changes that break existing code?


-- 
Frank Church

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