[Numpy-discussion] error: no matching function for call to 'PyArray_DATA'

[Jack Howarth]

   I am trying to patch pymol to avoid the warnings...

/sw/lib/python2.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2:
warning: "Using deprecated NumPy API, disable it by " "#defining
NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-W#warnings]
#warning "Using deprecated NumPy API, disable it by " \
 ^

If I pass the compiler flag
-DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION, the warning becomes an
error...

# gcc -DNDEBUG -g -fwrapv -fwrapv -O3 -Wall -Wstrict-prototypes
-DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D_PYMOL_LIBPNG
-D_PYMOL_INLINE -D_PYMOL_OPENGL_SHADERS -D_PYMOL_CGO_DRAWARRAYS
-D_PYMOL_CGO_DRAWBUFFERS -D_PYMOL_GL_CALLLISTS -D_PYMOL_VMD_PLUGINS
-D_HAVE_LIBXML -D_PYMOL_FREETYPE -DNO_MMLIBS -D_CGO_DRAWARRAYS
-DOPENGL_ES_2 -D_PYMOL_NUMPY -Iov/src -Ilayer0 -Ilayer1 -Ilayer2
-Ilayer3 -Ilayer4 -Ilayer5 -Imodules/cealign/src -Ibuild/generated
-Icontrib/uiuc/plugins/include
-Icontrib/uiuc/plugins/molfile_plugin/src
-I/sw/lib/python2.7/site-packages/numpy/core/include -I/sw/include
-I/sw/include/freetype2 -I/sw/include/libxml2 -I/usr/include
-I/usr/include/libxml2 -I/usr/X11/include -I/usr/X11/include/freetype2
-I/sw/include/python2.7 -c layer0/Field.cpp -o
build/temp.macosx-10.10-x86_64-2.7/layer0/Field.o
-Werror=implicit-function-declaration
-Werror=declaration-after-statement -Wno-write-strings
-Wno-unused-function -Wno-empty-body -Wno-char-subscripts -ffast-math
-funroll-loops -O3 -fcommon

layer0/Field.cpp:76:14: error: no matching function for call to 'PyArray_DATA'
      memcpy(PyArray_DATA(result), field->data, field->size);
             ^~~~~~~~~~~~

/sw/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1460:1:
note: candidate function not viable: no known conversion from
'PyObject *' (aka '_object *') to
      'PyArrayObject *' (aka 'tagPyArrayObject *') for 1st argument
PyArray_DATA(PyArrayObject *arr)
^
1 error generated.

What is the correct coding to eliminate this error? I have found some
threads which seems to suggest that PyArray_DATA is still available in
numpy 1.9 as an inline but I haven't found any examples of projects
patching their code to convert to that usage.
          Jack