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lib/puny_decode: Fix integer overflow (found by fuzzing)

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tabudz
2025-02-25 12:12:44 +08:00
parent ce2d2ce810
commit c490c3c3e5
1 changed files with 3 additions and 3 deletions
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6
src/punycode.c
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@@ -31,9 +31,9 @@ enum { base = 36, tmin = 1, tmax = 26, skew = 38, damp = 700,
/* point (for use in representing integers) in the range 0 to */
/* base-1, or base if cp is does not represent a value. */
static punycode_uint decode_digit(punycode_uint cp) {
return cp - 48 < 10 ? cp - 22 : cp - 65 < 26 ? cp - 65 : cp - 97 <
26 ? cp - 97 : base;
static unsigned decode_digit(int cp) {
return (unsigned) (cp - 48 < 10 ? cp - 22 : cp - 65 < 26 ? cp - 65 : cp - 97 <
26 ? cp - 97 : base);
}
/* encode_digit(d,flag) returns the basic code point whose value */