On Mon, Feb 15, 2016 at 8:46 AM, Mamoru TASAKA <mtas...@fedoraproject.org> 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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