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zlib: avoid signed shift in inflatePrime #1091

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Merged
steadytao merged 1 commit into from
Sep 16, 2026
Merged

zlib: avoid signed shift in inflatePrime #1091

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2 changes: 1 addition & 1 deletion zlib/inflate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -229,7 +229,7 @@ int ZEXPORT inflatePrime(z_streamp strm, int bits, int value)
}
if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;
value &= (1L << bits) - 1;
state->hold += value << state->bits;
state->hold += (unsigned long)value << state->bits;
state->bits += bits;
return Z_OK;
}
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