[3.13] gh-140301: Fix memory leak in subinterpreter PyConfig cleanup (GH-140303)...

[3.13] gh-140301: Fix memory leak in subinterpreter `PyConfig` cleanup (GH-140303)
(cherry picked from commit a615fb49c948902a982c3256899507abcc9f9bc8)

Co-authored-by: Kumar Aditya <kumaraditya@python.org>

diff --git a/Misc/NEWS.d/next/Core and Builtins/2025-10-18-18-08-36.gh-issue-140301.m-2HxC.rst b/Misc/NEWS.d/next/Core and Builtins/2025-10-18-18-08-36.gh-issue-140301.m-2HxC.rst
new file mode 100644 (file)
index 0000000..8b1c81c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2025-10-18-18-08-36.gh-issue-140301.m-2HxC.rst
@@ -0,0 +1 @@
+Fix memory leak of ``PyConfig`` in subinterpreters.

diff --git a/Python/pystate.c b/Python/pystate.c
index 68207443532cd09676142b715a4ffbd049658916..ba62a93d4574e6051069e2e7222537c510ed9590 100644 (file)
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -985,6 +985,8 @@ PyInterpreterState_Delete(PyInterpreterState *interp)
 
     _PyObject_FiniState(interp);
 
+    PyConfig_Clear(&interp->config);
+
     free_interpreter(interp);
 }