https://github.com/python/cpython/commit/d807210fee5606f8d504c1677f7e5ecb5f208a1e
commit: d807210fee5606f8d504c1677f7e5ecb5f208a1e
branch: main
author: stevens <[email protected]>
committer: kumaraditya303 <[email protected]>
date: 2026-07-14T22:18:17+05:30
summary:
gh-151126: Fix `PyErr_NoMemory` errors in `_ctypes.c` (#152720)
files:
A Misc/NEWS.d/next/Library/2026-07-01-11-29-13.gh-issue-151126.eElGy5.rst
M Modules/_ctypes/_ctypes.c
diff --git
a/Misc/NEWS.d/next/Library/2026-07-01-11-29-13.gh-issue-151126.eElGy5.rst
b/Misc/NEWS.d/next/Library/2026-07-01-11-29-13.gh-issue-151126.eElGy5.rst
new file mode 100644
index 000000000000000..d5ec1d254ef056e
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-07-01-11-29-13.gh-issue-151126.eElGy5.rst
@@ -0,0 +1,3 @@
+Fix a crash caused by failing to set :exc:`MemoryError` on allocation failure
+when passing :class:`ctypes.Structure` or :class:`ctypes.Union` instances by
+value to ctypes foreign functions.
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index e891249668c20f5..adfdf44e53604e3 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -673,6 +673,7 @@ StructUnionType_paramfunc(ctypes_state *st, CDataObject
*self)
if ((size_t)self->b_size > sizeof(void*)) {
ptr = PyMem_Malloc(self->b_size);
if (ptr == NULL) {
+ PyErr_NoMemory();
return NULL;
}
memcpy(ptr, self->b_ptr, self->b_size);
_______________________________________________
Python-checkins mailing list -- [email protected]
To unsubscribe send an email to [email protected]
https://mail.python.org/mailman3//lists/python-checkins.python.org
Member address: [email protected]
