gh-135427: check that exception occured, and also clear later the exception.

rani-pinchuk · rani-pinchuk · commit 3482918ddbd7 · 2025-07-19T15:34:41.000+02:00
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
@@ -8086,7 +8086,10 @@ warn_about_fork_with_threads(const char* name)
                 getpid(),
 #endif
                 name);
-        PyErr_WriteUnraisable(NULL);
+        if (PyErr_Occurred()) {
+            PyErr_WriteUnraisable(NULL);
+            PyErr_Clear();
+        }
     }
 }
 #endif  // HAVE_FORK1 || HAVE_FORKPTY || HAVE_FORK

Original file line number	Diff line number	Diff line change
`@@ -8086,7 +8086,10 @@ warn_about_fork_with_threads(const char* name)`
`8086`	`8086`	`getpid(),`
`8087`	`8087`	`#endif`
`8088`	`8088`	`name);`
`8089`		`- PyErr_WriteUnraisable(NULL);`
	`8089`	`+ if (PyErr_Occurred()) {`
	`8090`	`+ PyErr_WriteUnraisable(NULL);`
	`8091`	`+ PyErr_Clear();`
	`8092`	`+ }`
`8090`	`8093`	`}`
`8091`	`8094`	`}`
`8092`	`8095`	`#endif // HAVE_FORK1 \|\| HAVE_FORKPTY \|\| HAVE_FORK`