[PyQt] Segfault when building wxPython with SIP 4.19.11

[Phil Thompson]

On 06/07/2018 17:54, Scott Talbert wrote:
> On Fri, 6 Jul 2018, Phil Thompson wrote:
> 
>>>>>> Hi,
>>>>>> 
>>>>>> I'm seeing a segfault when building wxPython with SIP 4.19.11.
>>>>>> 
>>>>>> Running command: sip
>>>>>> /usr/bin/sip -w -o -g -I 
>>>>>> /home/talbert/Downloads/wxPython-4.0.1/src -I
>>>>>> /home/talbert/Downloads/wxPython-4.0.1/sip/gen -c /tmp/tmpdH4lfu 
>>>>>> -b
>>>>>> sip/cpp/_core.sbf -X pycode_core:wx/core.py sip/gen/_core.sip
>>>>>> Segmentation fault (core dumped)
>>>>>> 
>>>>>> (gdb) bt
>>>>>> #0  prcode (fp=fp at entry=0x55f0f0d13ed0, fmt=0x55f0f042adc7 
>>>>>> "\");\n#else\n",
>>>>>>     fmt at entry=0x55f0f042ad58 "    /* Get the SIP module's API. 
>>>>>> */\n#if
>>>>>> PY_VERSION_HEX >= 0x02050000\n    sip_sipmod =
>>>>>> PyImport_ImportModule(\"%s\");\n#else\n")
>>>>>>     at ./sipgen/gencode.c:14489
>>>>>> #1  0x000055f0f04004e6 in generateSipImport (mod=0x55f0f0d14180,
>>>>>>     fp=0x55f0f0d13ed0, sipName=0x0) at ./sipgen/gencode.c:2775
>>>>>> #2  generateCpp (pt=pt at entry=0x7ffd5c4cabc0, mod=<optimized out>,
>>>>>>     codeDir=codeDir at entry=0x7ffd5c4cc455 "/tmp/tmpdH4lfu",
>>>>>>     srcSuffix=srcSuffix at entry=0x55f0f0422866 ".cpp", 
>>>>>> parts=parts at entry=0,
>>>>>>     needed_qualifiers=needed_qualifiers at entry=0x0, xsl=0x0, 
>>>>>> py_debug=0,
>>>>>>     sipName=0x0) at ./sipgen/gencode.c:2561
>>>>>> #3  0x000055f0f0403269 in generateCode (pt=0x7ffd5c4cabc0,
>>>>>>     codeDir=0x7ffd5c4cc455 "/tmp/tmpdH4lfu",
>>>>>>     buildFile=0x7ffd5c4cc467 "sip/cpp/_core.sbf", 
>>>>>> docFile=<optimized out>,
>>>>>>     srcSuffix=0x55f0f0422866 ".cpp", except=<optimized out>, 
>>>>>> trace=0,
>>>>>>     releaseGIL=1, parts=0, needed_qualifiers=0x0, xsl=0x0, 
>>>>>> consModule=0x0,
>>>>>>     docs=1, py_debug=0, sipName=0x0) at ./sipgen/gencode.c:358
>>>>>> #4  0x000055f0f03e4e15 in main (argc=15, argv=0x7ffd5c4cae58)
>>>>>>     at ./sipgen/main.c:291
>>>>>> 
>>>>>> 4.19.8 worked ok.
>>>>> 
>>>>> It should be fixed in the current snapshot. 4.19.12 will be 
>>>>> released
>>>>> over the weekend.
>>>> 
>>>> However there are slight changes to the way a private sip module is 
>>>> specified. I don’t know if this affects how wxPython is built.
>>> 
>>> I don't know either.  When I build wxPython, I am building it for
>>> Fedora or Debian packages, and I build it using the public sip 
>>> module,
>>> stripping out the bundled copy.
>> 
>> How do you know that the two are compatible?
> 
> That wxPython is compatible with a given version of sip, or whether a
> public sip module is compatible with the version of sip that wxPython
> was compiled with?

Both.

Phil