yylval corruption solved

[wim delvaux]

The problem is that yyval (it was yyval and not yylval) gets reused in the 
parser code.  Value is copied after each 'action' to yyvsp.  

In my Actions block in the 'y' syntax I stored the pointer to the $<>$ which 
is the pointer to yyval and hence is overwritten.  I should have stored the 
pointer to the yyvsp but that is not accessible easily.,

You can forget everything I mailed in this context

W