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[devalue] guard against Python negative indexing

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Authored by: bashonly
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bashonly 2025-06-11 02:32:42 -05:00
parent 363c68d3ed
commit 9d00bd01ce
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GPG Key ID: 783F096F253D15B0
1 changed files with 6 additions and 0 deletions
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6
yt_dlp/utils/web/devalue.py
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@ -39,6 +39,8 @@ def parse_iter(parsed: typing.Any, /, *, revivers: dict[str, collections.abc.Cal
-5: -math.inf,
-6: -0.0,
}
lowest_valid_index = min(resolved.keys())
if isinstance(parsed, int):
if parsed == -2:
raise ValueError('invalid input')
@ -66,6 +68,10 @@ def parse_iter(parsed: typing.Any, /, *, revivers: dict[str, collections.abc.Cal
target[index] = resolved[source]
continue
if source < lowest_valid_index:
yield IndexError(f'invalid index: {source!r}')
continue
value = parsed[source]
if isinstance(value, list):
if value and isinstance(value[0], str):