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Re: Gcc 3.x regression in constant initializer [compile/20010327-1.c]
- To: Stephane Carrez <Stephane dot Carrez at worldnet dot fr>
- Subject: Re: Gcc 3.x regression in constant initializer [compile/20010327-1.c]
- From: Geoff Keating <geoffk at geoffk dot org>
- Date: 02 Nov 2001 12:57:36 -0800
- CC: gcc at gcc dot gnu dot org
- References: <3BE30170.C80B1891@worldnet.fr>
- Reply-to: Geoff Keating <geoffk at redhat dot com>
Stephane Carrez <Stephane.Carrez@worldnet.fr> writes:
> Hi!
>
> I've found a regression in 3.1 compared to gcc 2.95. The following code:
>
> extern void _text;
> static unsigned int x = (unsigned int) &_text - 0x10000000L - 1;
> static int x1 = (int) &_text - 0x10000000L - 1;
> static long x2 = (long) &_text - 0x10000000L - 1;
> static __SIZE_TYPE__ x3 = (__SIZE_TYPE__) &_text - 0x10000000L - 1;
>
> compiles correctly with GCC 2.95.3 on i386. It fails with 3.1 and
> also with a `gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-81)'.
>
> The following initialization:
>
> static unsigned int x = (unsigned int) &_text - 0x10000000L - 1;
>
> was working with 2.95 and it fails now with:
>
> /tmp/bug-1.c:2: initializer element is not computable at load time
>
>
> This problem is now in evidence after I integrated:
>
> 2001-11-01 Stephane Carrez <Stephane.Carrez@worldnet.fr>
>
> * gcc.c-torture/compile/20010327-1.c: Use __SIZE_TYPE__ instead
> of unsigned long.
>
> and it explains the failure for compile/20010327-1.c on i386 and ppc-eabisim
> (at least).
>
> Until a fix is found, I suggest to keep my patch, even if it introduces new
> failures in native and ppc-eabisim validation. OK?
Please don't do that. Instead of changing a test so that it no longer
tests what it used to test, delete the old one and create a new one
with a different name.
--
- Geoffrey Keating <geoffk@geoffk.org> <geoffk@redhat.com>