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Fix hypothetical OOB in toml parser (#17789)

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This commit is contained in:
Jarred Sumner
2025-02-27 21:22:04 -08:00
committed by GitHub
parent febf6593a6
commit c9e4153826
1 changed files with 7 additions and 0 deletions
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7
src/toml/toml_lexer.zig
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@@ -156,11 +156,18 @@ pub const Lexer = struct {
}
inline fn nextCodepointSlice(it: *Lexer) []const u8 {
if (it.current >= it.source.contents.len) {
return "";
}
const cp_len = strings.wtf8ByteSequenceLengthWithInvalid(it.source.contents.ptr[it.current]);
return if (!(cp_len + it.current > it.source.contents.len)) it.source.contents[it.current .. cp_len + it.current] else "";
}
inline fn nextCodepoint(it: *Lexer) CodePoint {
if (it.current >= it.source.contents.len) {
it.end = it.source.contents.len;
return -1;
}
const cp_len = strings.wtf8ByteSequenceLengthWithInvalid(it.source.contents.ptr[it.current]);
const slice = if (!(cp_len + it.current > it.source.contents.len)) it.source.contents[it.current .. cp_len + it.current] else "";