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fix: panic on decode of a large negative integer

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CJ van den Berg 2026-03-12 19:27:48 +01:00
parent 13f8a698e4
commit d7c87d0562
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 3 additions and 1 deletions
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src/cbor.zig
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@ -367,7 +367,9 @@ fn decodePInt(iter: *[]const u8, minor: u5) error{ TooShort, InvalidPIntType }!u
} }
fn decodeNInt(iter: *[]const u8, minor: u5) Error!i64 { fn decodeNInt(iter: *[]const u8, minor: u5) Error!i64 {
return -@as(i64, @intCast(try decodePInt(iter, minor) + 1)); const n = try decodePInt(iter, minor);
if (n > maxInt(i64)) return error.IntegerTooSmall;
return -1 - @as(i64, @intCast(n));
} }
pub fn decodeMapHeader(iter: *[]const u8) error{ TooShort, InvalidMapType, InvalidPIntType }!usize { pub fn decodeMapHeader(iter: *[]const u8) error{ TooShort, InvalidMapType, InvalidPIntType }!usize {