Bug 873382 – sci-libs/linux-gpib-4.3.4-r1: SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Justin Keogh 2022-09-29 04:03:58 UTC]

Created attachment 814558 [details]
Script to reproduce error.

sci-libs/linux-gpib-4.3.4-r1 results in a SystemError when attempting to send data to a GPIB device.

A version bump to sci-libs/linux-gpib-4.3.5 and sci-libs/linux-gpib-modules-4.3.5 fixes it, as noted in the release notes: https://sourceforge.net/projects/linux-gpib/files/linux-gpib%20for%203.x.x%20and%202.6.x%20kernels/4.3.5/

The only change necessary was to comment out the first patch ""${FILESDIR}/${P}-kernel-5.17.patch" in linux-gpib-modules-4.3.5.ebuild


$ cat test.py 
#!/usr/bin/env python3

import pyvisa
rm = pyvisa.ResourceManager("@py")
resource_manager = pyvisa.ResourceManager()
resources = list(resource_manager.list_resources())

try:
    resources.remove("ASRL/dev/ttyS0::INSTR")
except ValueError:
    pass

for resource in resources:
    print(resource)
    inst = rm.open_resource(resource)
    inst.query("*IDN?")

$ ./test.py 
<snip>
libgpib: invalid descriptor
GPIB0::1::INSTR
Traceback (most recent call last):
  File "/home/cfg/linux/hardware/gpib/py3.10_PY_SSIZE_T_CLEAN/./test.py", line 16, in <module>
    inst.query("*IDN?")
  File "/usr/lib/python3.10/site-packages/pyvisa/resources/messagebased.py", line 642, in query
    self.write(message)
  File "/usr/lib/python3.10/site-packages/pyvisa/resources/messagebased.py", line 197, in write
    count = self.write_raw(message.encode(enco))
  File "/usr/lib/python3.10/site-packages/pyvisa/resources/messagebased.py", line 157, in write_raw
    return self.visalib.write(self.session, message)[0]
  File "/usr/lib/python3.10/site-packages/pyvisa_py/highlevel.py", line 543, in write
    written, status_code = self.sessions[session].write(data)
  File "/usr/lib/python3.10/site-packages/pyvisa_py/gpib.py", line 401, in write
    ifc.write(data)
  File "/usr/lib/python3.10/site-packages/Gpib.py", line 53, in write
    gpib.write(self.id, str)
SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

# above test conducted with versions:
$ emerge PyVISA PyVISA-py linux-gpib -pv1

These are the packages that would be merged, in reverse order:

Calculating dependencies  ... done!
[ebuild   R    ] sci-libs/linux-gpib-4.3.4-r1::gentoo  USE="firmware pcmcia python -doc -guile -perl (-php) -static -tcl" PYTHON_SINGLE_TARGET="python3_10 -python3_8 -python3_9 -python3_11" 0 KiB
[ebuild   R    ] dev-python/PyVISA-py-0.5.3::natinst  USE="-doc -test" PYTHON_TARGETS="python3_10 -python3_8 -python3_9 -python3_11" 0 KiB
[ebuild   R    ]  dev-python/PyVISA-1.12.0::natinst  USE="-doc -test" PYTHON_TARGETS="python3_10 -python3_8 -python3_9 -python3_11" 0 KiB

[Comment 1 Larry the Git Cow 2022-10-02 15:43:46 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=059e286ec5d5a10d3dac6e771e1d5a89eecad8dc

commit 059e286ec5d5a10d3dac6e771e1d5a89eecad8dc
Author:     Andreas K. Hüttel <[e-mail]>
AuthorDate: 2022-10-02 15:43:00 +0000
Commit:     Andreas K. Hüttel <[e-mail]>
CommitDate: 2022-10-02 15:43:34 +0000

    sci-libs/linux-gpib: Version bump
    
    Bug: https://bugs.gentoo.org/873382
    Signed-off-by: Andreas K. Hüttel <[e-mail]>

 sci-libs/linux-gpib/Manifest                |   1 +
 sci-libs/linux-gpib/linux-gpib-4.3.5.ebuild | 181 ++++++++++++++++++++++++++++
 2 files changed, 182 insertions(+)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fe7e76f2e53fa60d515458210c8d9ea049075145

commit fe7e76f2e53fa60d515458210c8d9ea049075145
Author:     Andreas K. Hüttel <[e-mail]>
AuthorDate: 2022-10-02 15:39:12 +0000
Commit:     Andreas K. Hüttel <[e-mail]>
CommitDate: 2022-10-02 15:43:31 +0000

    sci-libs/linux-gpib-modules: Version bump
    
    Bug: https://bugs.gentoo.org/873382
    Signed-off-by: Andreas K. Hüttel <[e-mail]>

 sci-libs/linux-gpib-modules/Manifest               |  1 +
 .../linux-gpib-modules-4.3.5.ebuild                | 69 ++++++++++++++++++++++
 2 files changed, 70 insertions(+)

[Comment 2 Justin Keogh 2022-10-10 23:40:01 UTC]

Tested the fix/bump, it works. Good to close. TY!