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#140871) Co-authored-by: Pablo Galindo Salgado <pablogsal@gmail.com>
…in `{jit,tail-call}.yml` (#148126)
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
_PyFrame_Copy() copied interpreter frames into generator and frame-object storage without initializing the visited byte. Incremental GC later reads frame->visited in mark_stacks() on non-start passes, so copied frames could expose an uninitialized value once they became live on a thread stack again. Reset visited when copying a frame so copied frames start with defined GC bookkeeping state. Preserve lltrace in Py_DEBUG builds.
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