Partial merge of commit #39990

  mergeinfo property left unchanged on purpose, as the commit also has
  a change in compiler/nadd.pas source that is not handled here.
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r39990 | florian | 2018-10-20 10:17:34 +0000 (Sat, 20 Oct 2018) | 2 lines

* avoid range check errors

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--- Merging r39990 into '.':
U    compiler/powerpc/rappcgas.pas

git-svn-id: branches/fixes_3_2@40794 -

compiler/powerpc/rappcgas.pas

@@ -159,7 +159,8 @@ Unit rappcgas;
                End
               Else
                Begin
-                 oper.opr.Ref.Offset:=BuildConstExpression(false,true);
+                 { cast explicitly to avoid range check errors }
+                 oper.opr.Ref.Offset:=ASizeInt(BuildConstExpression(false,true));
                  Consume(AS_RPAREN);
                  if actasmtoken=AS_AT then
                    ReadAt(oper);