gh-151763: Fix OOM cleanup of initial thread state

zainnadeem786 · zainnadeem786 · commit dcf5de8de6d8 · 2026-06-25T11:42:38.000+05:00
diff --git a/Misc/NEWS.d/next/Library/2026-06-25-11-52-00.gh-issue-151763.mW3xQp.rst b/Misc/NEWS.d/next/Library/2026-06-25-11-52-00.gh-issue-151763.mW3xQp.rst
@@ -0,0 +1,2 @@
+Fixed a possible crash during interpreter creation when memory allocation
+fails in the free-threaded build.
diff --git a/Python/pystate.c b/Python/pystate.c
@@ -1505,6 +1505,7 @@ alloc_threadstate(PyInterpreterState *interp)
         }
         reset_threadstate(tstate);
     }
+    tstate->base.interp = interp;
     return tstate;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Fixed a possible crash during interpreter creation when memory allocation`
	`2`	`+fails in the free-threaded build.`
Original file line number	Diff line number	Diff line change
`@@ -1505,6 +1505,7 @@ alloc_threadstate(PyInterpreterState *interp)`
`1505`	`1505`	`}`
`1506`	`1506`	`reset_threadstate(tstate);`
`1507`	`1507`	`}`
	`1508`	`+ tstate->base.interp = interp;`
`1508`	`1509`	`return tstate;`
`1509`	`1510`	`}`
`1510`	`1511`