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Re: glibc 2.7 complex functions are possibly miscompiled by gcc 4.3 trunk
- From: Ismail DÃnmez <ismail at pardus dot org dot tr>
- To: gcc at gcc dot gnu dot org
- Date: Sat, 29 Dec 2007 18:11:47 +0200
- Subject: Re: glibc 2.7 complex functions are possibly miscompiled by gcc 4.3 trunk
- References: <200712221911.32786.ismail@pardus.org.tr>
Saturday 22 December 2007 19:11:32 tarihinde Ismail DÃnmez ÅunlarÄ yazmÄÅtÄ:
> Hi all,
>
> I am doing glibc 4.3 regression tests using gcc 4.3 trunk nearly every day
> and I see 3 tests fail :
>
> math/test-float
> math/test-ildoubl
> math/test-ifloat
>
> The erorrs are all similar :
>
> Failure: Test: Imaginary part of: cacosh (-0 + 0 i) == 0.0 + pi/2 i
> Result:
> is: 0.00000000000000000000e+00 0x0.00000000000000000000p+0
> should be: 1.57079637050628662109e+00 0x1.921fb600000000000000p+0
> difference: 1.57079637050628662109e+00 0x1.921fb600000000000000p+0
> ulp : 13176795.0000
> max.ulp : 0.0000
Replying to myself once again, these failures are due to -fgcse-after-reload
flag, -O3 -fno-gcse-after-reload cures this. Any tips on how to debug this?
Regards,
ismail
--
Never learn by your mistakes, if you do you may never dare to try again.