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fix(scanner): don't write past the serialization buffer #351

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fix(scanner): don't write past the serialization buffer #351

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2 changes: 1 addition & 1 deletion src/scanner.c
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Original file line number Diff line number Diff line change
Expand Up @@ -380,7 +380,7 @@ unsigned tree_sitter_python_external_scanner_serialize(void *payload, char *buff
size += delimiter_count;

uint32_t iter = 1;
for (; iter < scanner->indents.size && size < TREE_SITTER_SERIALIZATION_BUFFER_SIZE; ++iter) {
for (; iter < scanner->indents.size && size + 2 <= TREE_SITTER_SERIALIZATION_BUFFER_SIZE; ++iter) {
uint16_t indent_value = *array_get(&scanner->indents, iter);
buffer[size++] = (char)(indent_value & 0xFF);
buffer[size++] = (char)((indent_value >> 8) & 0xFF);
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