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Re: Bootstrap failure on trunk: x86_64-linux-gnu
- From: Duncan Sands <baldrick at free dot fr>
- To: gcc at gcc dot gnu dot org
- Cc: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>, law at redhat dot com, dewar at gnat dot com
- Date: Wed, 1 Mar 2006 11:11:56 +0100
- Subject: Re: Bootstrap failure on trunk: x86_64-linux-gnu
- References: <10603010308.AA08060@vlsi1.ultra.nyu.edu>
> This code only works for one-complement machines, since it assumes a
> symmetric range for Int. It breaks when UI_To_Int returns Integer'First, as
> it did in this case. When it does, the abs produces an erroneous result
> (since checking is disabled). So it almost doesn't matter what it puts into
> Num (but it actually puts in an out-of-range value there too).
Is there a simple way to have the Ada runtime (+ compiler) be built with checking
enabled when bootstrapping?
Thanks a lot,