gcc-6 and sip help (bug 812138)

["Gudjon I. Gudjonsson" <gudjon@gudjon.org>]

Hi list

I am trying to fix a sip/gcc-6 related bug in package pyqwt3d but I don't know 
how.

OpeGL_mod.sip contains

const int GL_2D;
const int GL_3D;
const int GL_3D_COLOR;
....

which is converted to

sipOpenGLcmodule.cpp which contains:

static sipIntInstanceDef intInstances[] = {
    {sipName_GL_2D, GL_2D},
    {sipName_GL_2_BYTES, GL_2_BYTES},
    {sipName_GL_3D, GL_3D},
    ......
    {0, 0}
};

This fails to compile with the following message:

make[2]: Entering directory '/home/gudjon/nb/pyqwt3d/
pyqwt3d-0.1.7~cvs20090625/build/py2.7-qt4/configure/OpenGL_Qt4'
g++ -c -g -O2 -fstack-protector-strong -Wformat -Werror=format-security  -
Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -O2 -Wall -W -D_REENTRANT -DNDEBUG -
DGL2PS_HAVE_ZLIB -DHAS_NUMPY -DQT_NO_DEBUG -DQT_OPENGL_LIB -I. -I/usr/include/
qwtplot3d-qt4 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/
numpy/core/include -I/usr/include/qt4/Qt -I/usr/share/qt4/mkspecs/default -I/
usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I/usr/X11R6/include -o 
sipOpenGLcmodule.o sipOpenGLcmodule.cpp
sipOpenGLcmodule.cpp:4445:1: error: narrowing conversion of ‘4294967295u’ from 
‘unsigned int’ to ‘int’ inside { } [-Wnarrowing]
 };


sipIntInstanceDef is defined in:
/usr/include/python2.7/sip.h

typedef struct _sipIntInstanceDef {
    /* The int name. */
    const char *ii_name;

    /* The int value. */
    int ii_val;
} sipIntInstanceDef;


But some of the OpenGL parameters are out of range for int.


Does anyone have a clue on how to fix this?

Regards
Gudjon