On Sun, Jun 15, 2014 at 09:32:27PM +0200, Sam Ravnborg wrote: > diff --git a/expand.c b/expand.c > index 0f6720c..4a96de4 100644 > --- a/expand.c > +++ b/expand.c > @@ -187,7 +187,7 @@ static int simplify_int_binop(struct expression *expr, struct symbol *ctype) > return 0; > r = right->value; > if (expr->op == SPECIAL_LEFTSHIFT || expr->op == SPECIAL_RIGHTSHIFT) { > - if (r >= ctype->bit_size) { > + if (expr->flags & Int_const_expr && r >= ctype->bit_size) { Thanks! I had no idea how to start writing a fix for this, but the test should be: if (expr->right->flags & Int_const_expr Otherwise both sides of the shift have to be const. > if (conservative) > return 0; > r = check_shift_count(expr, ctype, r); > regards, dan carpenter _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel