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References: <20180412115838.10208-1-alex.bennee@linaro.org>
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From: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <8a3b838f-70ce-33ec-db83-ee4fa2aad3a0@mail.uni-paderborn.de>
Date: Thu, 12 Apr 2018 14:34:34 +0200
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Subject: Re: [Qemu-devel] [PATCH v1 2/2] fpu/softfloat: raise float_invalid
 for NaN in float_to_int
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To: Peter Maydell <peter.maydell@linaro.org>, =?UTF-8?Q?Alex_Benn=c3=a9e?= <alex.bennee@linaro.org>
Cc: QEMU Developers <qemu-devel@nongnu.org>, Aurelien Jarno <aurelien@aurel32.net>

On 04/12/2018 02:26 PM, Peter Maydell wrote:
> On 12 April 2018 at 12:58, Alex Bennée <alex.bennee@linaro.org> wrote:
>> Fixes https://bugs.launchpad.net/qemu/+bug/1759264
>>
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
>> ---
>>  fpu/softfloat.c | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/fpu/softfloat.c b/fpu/softfloat.c
>> index 9b99aa6ec8..ddc77c273c 100644
>> --- a/fpu/softfloat.c
>> +++ b/fpu/softfloat.c
>> @@ -1344,6 +1344,7 @@ static int64_t round_to_int_and_pack(FloatParts in, int rmode,
>>      case float_class_qnan:
>>      case float_class_dnan:
>>      case float_class_msnan:
>> +        s->float_exception_flags = orig_flags | float_flag_invalid;
>>          return max;
>>      case float_class_inf:
>>          return p.sign ? min : max;
> 
> Don't we also need to raise the Invalid flag for float_class_inf ?
> 

Yup, as mentioned in the bug report.

Cheers,
Bastian