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[3.12] gh-107916: Save the error code before decoding the filename in PyErr_SetFromErrnoWithFilename() etc (GH-107929) #108205

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Merged
merged 1 commit into from
Aug 21, 2023
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[3.12] gh-107916: Save the error code before decoding the filename in PyErr_SetFromErrnoWithFilename() etc (GH-107929) #108205

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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/C API/2023-08-14-10-59-03.gh-issue-107916.KH4Muo.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
C API functions :c:func:`PyErr_SetFromErrnoWithFilename`,
:c:func:`PyErr_SetExcFromWindowsErrWithFilename` and
:c:func:`PyErr_SetFromWindowsErrWithFilename` save now the error code before
calling :c:func:`PyUnicode_DecodeFSDefault`.
8 changes: 8 additions & 0 deletions Python/errors.c
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Original file line number Diff line number Diff line change
Expand Up @@ -919,10 +919,12 @@ PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
{
PyObject *name = NULL;
if (filename) {
int i = errno;
name = PyUnicode_DecodeFSDefault(filename);
if (name == NULL) {
return NULL;
}
errno = i;
}
PyObject *result = PyErr_SetFromErrnoWithFilenameObjects(exc, name, NULL);
Py_XDECREF(name);
Expand Down Expand Up @@ -1022,6 +1024,9 @@ PyObject *PyErr_SetExcFromWindowsErrWithFilename(
{
PyObject *name = NULL;
if (filename) {
if ((DWORD)ierr == 0) {
ierr = (int)GetLastError();
}
name = PyUnicode_DecodeFSDefault(filename);
if (name == NULL) {
return NULL;
Expand Down Expand Up @@ -1052,6 +1057,9 @@ PyObject *PyErr_SetFromWindowsErrWithFilename(
{
PyObject *name = NULL;
if (filename) {
if ((DWORD)ierr == 0) {
ierr = (int)GetLastError();
}
name = PyUnicode_DecodeFSDefault(filename);
if (name == NULL) {
return NULL;
Expand Down