Dear list,
I just sponsored a package that built nicely locally with g++ 6.4.2-5 on
amd64 but fails on the platforms listed in the subject line:
https://buildd.debian.org/status/package.php?p=ball&suite=sid
which gives plenty of repeats of
.. /source/DATATYPE/hashGrid.C:23:3: error: narrowing conversion of
'-0x00000000000000001' from 'int' to 'const char' inside { } [-fpermissive]
I am starring at it for a while now and googled, and from
>From http://msdn.microsoft.com/en-us/library/c70dax92.aspx I can understand
>that
the regular 1 is taken as an integer constant. So in the code below it should
instead possibly read {'\0', '\1', (char) -1 } for {0,1,-1} ? I would not like
that too much. And even if so, all platforms should behave the same.
#include <BALL/DATATYPE/hashGrid.h>
namespace BALL
{
namespace __private
{
const char neighbour_table_[27][3] =
{
{ 0, 0, 0 }, { 0, 0, -1 }, { 0, 0, 1 },
{ 0, -1, -1 }, { 0, -1, 0 }, { 0, -1, 1 },
{ 0, 1, -1 }, { 0, 1, 0 }, { 0, 1, 1 },
{-1, 0, -1 }, {-1, 0, 0 }, {-1, 0, 1 },
{-1, -1, -1 }, {-1, -1, 0 }, {-1, -1, 1 },
{-1, 1, -1 }, {-1, 1, 0 }, {-1, 1, 1 },
{ 1, 0, -1 }, { 1, 0, 0 }, { 1, 0, 1 },
{ 1, -1, -1 }, { 1, -1, 0 }, { 1, -1, 1 },
{ 1, 1, -1 }, { 1, 1, 0 }, { 1, 1, 1 }
};
}
}
/// file ends here
where the header file reads
namespace BALL
{
namespace __private
{
extern const char BALL_EXPORT neighbour_table_[27][3];
}
....
}
Gcc 4.6.2-5 on amd64 does not complain at all. I do not know the version of gcc
on the buildds.
Suggestions?
Many thanks
Steffen
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