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| author | Brandt Bucher <brandtbucher@microsoft.com> | 2022-10-03 23:36:52 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-10-03 23:36:52 (GMT) |
| commit | 93fcc1f4133e177882850177c2c047d46019b812 (patch) | |
| tree | 523560275ae44387a418e9f18c0df6eb2a69993f /Python | |
| parent | d053c47bfde1b3d8779546b980849708662f2660 (diff) | |
| download | cpython-93fcc1f4133e177882850177c2c047d46019b812.zip cpython-93fcc1f4133e177882850177c2c047d46019b812.tar.gz cpython-93fcc1f4133e177882850177c2c047d46019b812.tar.bz2 | |
GH-97752: Clear the `previous` member of newly-created generator/coroutine frames (GH-97795)
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/frame.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Python/frame.c b/Python/frame.c index 14464df..05a8cff 100644 --- a/Python/frame.c +++ b/Python/frame.c @@ -54,6 +54,9 @@ _PyFrame_Copy(_PyInterpreterFrame *src, _PyInterpreterFrame *dest) assert(src->stacktop >= src->f_code->co_nlocalsplus); Py_ssize_t size = ((char*)&src->localsplus[src->stacktop]) - (char *)src; memcpy(dest, src, size); + // Don't leave a dangling pointer to the old frame when creating generators + // and coroutines: + dest->previous = NULL; } |