On Mon, Feb 15, 2016 at 8:46 AM, Mamoru TASAKA <[email protected]>
wrote:
> Richard Shaw wrote on 02/15/2016 11:34 PM:
>
>> Can someone point me in the right direction? My package openCOLLADA is
>> FTBFS in rawhide with the following (repeating) error:
>>
>>
>> /builddir/build/BUILD/OpenCOLLADA-3335ac164e68b2512a40914b14c74db260e6ff7d/COLLADABaseUtils/src/COLLADABUURI.cpp:57:2:
>> error: narrowing conversion of '-1' from 'int' to 'char' inside { }
>> [-Wnarrowing]
>> };
>>
>> I tried using the gcc6 porting guide but I'm not qutie enough of a
>> programmer to understand how to apply it in this case. The offending code
>> is:
>>
>> const char HEX2DEC[256] = ^M
>> {^M
>> /* 0 1 2 3 4 5 6 7 8 9 A B C D E
>> F
>> */^M
>> /* 0 */ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
>> -1,-1,-1,-1,^M
>> /* 1 */ -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
>>
>
> <snip>
>
> On _ARM_ (actually build failure seems to be on ARM) char is _unsigned_
> by default, so converting (int)-1 to char on ARM is narrowing conversion
> and C++11 forbids this on list-initialization.
>
Yes, I forgot to mention this was an ARM failure, i686 and x86_64 builds
will complete.
> You can do this when you explicitly cast, like
> const char HEX2DEC[256] = { (char)-1, ..... }
I almost tried that but thought there might be a better way, I guess not...
Thanks,
Richard
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