Issue #28410: Added _PyErr_FormatFromCause() -- the helper for raising
new exception with setting current exception as __cause__.
_PyErr_FormatFromCause(exception, format, args...) is equivalent to Python
raise exception(format % args) from sys.exc_info()[1]
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index adeec8c..80e6cf2 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -3835,13 +3835,10 @@
Py_FileSystemDefaultEncodeErrors);
#ifdef MS_WINDOWS
if (!res && PyErr_ExceptionMatches(PyExc_UnicodeDecodeError)) {
- PyObject *exc, *val, *tb;
- PyErr_Fetch(&exc, &val, &tb);
- PyErr_Format(PyExc_RuntimeError,
- "filesystem path bytes were not correctly encoded with '%s'. " \
+ _PyErr_FormatFromCause(PyExc_RuntimeError,
+ "filesystem path bytes were not correctly encoded with '%s'. "
"Please report this at http://bugs.python.org/issue27781",
Py_FileSystemDefaultEncoding);
- _PyErr_ChainExceptions(exc, val, tb);
}
#endif
return res;