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bcachefs: varint: Avoid left-shift of a negative value

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Shifting a negative value left is undefined.

Signed-off-by: Tavian Barnes <tavianator@tavianator.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Tavian Barnes 2024-06-21 16:39:58 -04:00 committed by Kent Overstreet
parent 2e118ba36d
commit ee1b8dc17a
1 changed files with 1 additions and 1 deletions
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fs/bcachefs/varint.c
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@ -85,7 +85,7 @@ int bch2_varint_encode_fast(u8 *out, u64 v)
if (likely(bytes < 9)) { if (likely(bytes < 9)) {
v <<= bytes; v <<= bytes;
v |= ~(~0 << (bytes - 1)); v |= ~(~0U << (bytes - 1));
} else { } else {
*out++ = 255; *out++ = 255;
bytes = 9; bytes = 9;