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Re: [PATCH] s390: Fix build warning with gcc6 in jmpbuf-unwind.h.
- From: Andreas Schwab <schwab at suse dot de>
- To: Stefan Liebler <stli at linux dot vnet dot ibm dot com>
- Cc: libc-alpha at sourceware dot org
- Date: Thu, 23 Jul 2015 11:11:34 +0200
- Subject: Re: [PATCH] s390: Fix build warning with gcc6 in jmpbuf-unwind.h.
- Authentication-results: sourceware.org; auth=none
- References: <moq7up$vgf$1 at ger dot gmane dot org> <mvmoaj39syo dot fsf at hawking dot suse dot de> <moqas2$eb9$1 at ger dot gmane dot org>
Stefan Liebler <stli@linux.vnet.ibm.com> writes:
> On 07/23/2015 10:30 AM, Andreas Schwab wrote:
>> Stefan Liebler <stli@linux.vnet.ibm.com> writes:
>>
>>> This patch casts _Unwind_GetCFA return to _Unwind_Ptr first
>>
>> How can a cast fix a truncated pointer value on s390x?
>>
>> Andreas.
>>
> Why is the pointer truncated on s390x?
> All three types _Unwind_Word, _Unwind_Ptr and void * have a size of 4bytes
> on s390 and 8 bytes on s390x.
Then why do you get a warning?
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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