STINNER Victor <vstin...@redhat.com> added the comment:
The bug can be reproduced on the master branch of Python. I tested with
versions:
* lxml 4.3.4
* xmlsec 1.3.3
The filename comes from a lxml.etree.XMLSyntaxError exception which inherits
from SyntaxError. The bug can be reproduced without lxml nor xmlsec, just with
attached excepthook_syntaxerror.py:
$ ./python excepthook_syntaxerror.py
Traceback (most recent call last):
File "/home/vstinner/prog/python/master/excepthook_syntaxerror.py", line 3,
in <module>
raise SyntaxError("msg", (b"bytes_filename", 123, 0, "text"))
Objects/unicodeobject.c:492: _PyUnicode_CheckConsistency: Assertion
"((((((PyObject*)(op))->ob_type))->tp_flags & ((1UL << 28))) != 0)" failed
Enable tracemalloc to get the memory block allocation traceback
object : b'bytes_filename'
type : bytes
refcount: 4
address : 0x7fe22fe7ce50
Fatal Python error: _PyObject_AssertFailed
Current thread 0x00007fe23cfbf740 (most recent call first):
File "/home/vstinner/prog/python/master/excepthook_syntaxerror.py", line 5 in
<module>
Aborted (core dumped)
excepthook_syntaxerror.py uses:
raise SyntaxError("msg", (b"bytes_filename", 123, 0, "text"))
----------
title: print_exception() crash when lxml 4.2.5 raises a parser error ->
print_exception() crash when lxml/xmlsec raises a parser error
versions: +Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48451/excepthook_syntaxerror.py
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<https://bugs.python.org/issue37467>
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