Eryk Sun added the comment:
parse_envlist is calling PyUnicode_FromFormat with the format "%U=%U", but
passing it bytes:
|Debug Error!
Program: C:\Program Files\Python36\python_d.exe
abort() has been called
(Press Retry to debug the application)
(1e8.374): Break instruction exception - code 80000003 (first chance)
ucrtbased!issue_debug_notification+0x45:
00007ffc`aa1f1985 cc int 3
1:002> k 0n12
Child-SP RetAddr Call Site
00000030`a5fe9bb0 00007ffc`aa1f1b23 ucrtbased!issue_debug_notification+0x45
00000030`a5fe9c00 00007ffc`aa212d7d
ucrtbased!__acrt_report_runtime_error+0x13
00000030`a5fe9c60 00007ffc`aa2184cf ucrtbased!abort+0x1d
00000030`a5fe9ca0 00007ffc`aa2164c8
ucrtbased!common_assert_to_stderr<wchar_t>+0xbf
00000030`a5fe9d00 00007ffc`aa218e7f ucrtbased!common_assert<wchar_t>+0x68
00000030`a5fe9d40 00000000`60e59045 ucrtbased!_wassert+0x2f
00000030`a5fe9d70 00000000`60eb9f71
python36_d!_PyUnicode_CheckConsistency+0x45
00000030`a5fe9e00 00000000`60e4cd07 python36_d!unicode_fromformat_arg+0xc81
00000030`a5fe9fa0 00000000`60e4cc31 python36_d!PyUnicode_FromFormatV+0xa7
00000030`a5fea040 00000000`60c69853 python36_d!PyUnicode_FromFormat+0x31
00000030`a5fea080 00000000`60c68286 python36_d!parse_envlist+0x1c3
00000030`a5fea180 00000000`60c5d4ee python36_d!os_spawnve_impl+0x1d6
1:002> .frame 6
06 00000030`a5fe9d70 00000000`60eb9f71
python36_d!_PyUnicode_CheckConsistency+0x45
1:002> ?? op->ob_type->tp_name
char * 0x00000000`60fe1248
"bytes"
parse_envlist used to call PyUnicode_FSConverter on key and val; get the
underlying buffers via PyBytes_AsString; allocate a new buffer and copy key and
val into "%s=%s". Now it instead calls PyUnicode_FromFormat for "%U=%U" and
then fsconvert_strdup, which has been modified to call
PyUnicode_AsWideCharString on Windows and otherwise PyUnicode_FSConverter.
For Windows it could use PyUnicode_FSDecoder on key and val in combination with
PyUnicode_FromFormat and the format string "%U=%U". For Unix it could use
PyUnicode_FSConverter for key and val in combination with PyBytes_FromFormat
and the format string "%s=%s".
----------
nosy: +eryksun
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28114>
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