Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.debian.bugs.dist > #1270726
| From | Drew Parsons <dparsons@debian.org> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.ports.powerpc |
| Subject | Bug#1120971: powerpc: _ctype_from_dtype_scalar NotImplementedError: Converting dtype('int32') to a ctypes type |
| Date | 2025-11-18 22:50 +0100 |
| Message-ID | <LSBKh-dYBl-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
Source: numpy
Version: 1:2.3.4+ds-3
Severity: normal
X-Debbugs-Cc: debian-powerpc@lists.debian.org
User: debian-powerpc@lists.debian.org
Usertags: powerpc
Control: forwarded -1 https://github.com/numpy/numpy/issues/30257
Control: affects -1 src:fenics-dolfinx
Debian tests of dolfinx on powerpc have exposed an irregularity in ppc ctypes
https://buildd.debian.org/status/fetch.php?pkg=fenics-dolfinx&arch=powerpc&ver=1%3A0.10.0.post2-1exp2&stamp=1763496611&raw=0
/usr/lib/python3/dist-packages/numpy/ctypeslib.py:382: in _ctype_from_dtype_scalar
raise NotImplementedError(
E NotImplementedError: Converting dtype('int32') to a ctypes type
The failing line
numpy/numpy/ctypeslib/_ctypeslib.py
Line 385 in a251f2a
ctype = _scalar_type_map[dtype_native]
is simply trying to access a ctype for dtype int32.
The problem can be reproduced manually. The strange thing is that
inspecting the _scalar_type_map dict (on ppc), it clearly shows an
entry dtype('int32'): <class 'ctypes.c_long'>
import numpy as np
import platform
print("testing architecture", platform.machine())
a = np.array([1], dtype=np.int32)
dtype_native = a.dtype.newbyteorder('=')
print("'np.int32' is", dtype_native)
print("ctypeslib _scalar_type_map is", np.ctypeslib._scalar_type_map)
print(f"extract ctype for {dtype_native}:")
ctype = np.ctypeslib._scalar_type_map[dtype_native]
print("got ctype", ctype)
Back to linux.debian.bugs.dist | Previous | Next — Next in thread | Find similar | Unroll thread
Bug#1120971: powerpc: _ctype_from_dtype_scalar NotImplementedError: Converting dtype('int32') to a ctypes type Drew Parsons <dparsons@debian.org> - 2025-11-18 22:50 +0100
Bug#1120971: powerpc: _ctype_from_dtype_scalar NotImplementedError: Converting dtype('int32') to a ctypes type Drew Parsons <dparsons@debian.org> - 2025-11-19 12:50 +0100
csiph-web