csun5285 commented on code in PR #47964:
URL: https://github.com/apache/doris/pull/47964#discussion_r1972812781
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be/src/vec/columns/column_string.cpp:
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@@ -569,28 +588,25 @@ ColumnPtr ColumnStr<T>::replicate(const IColumn::Offsets&
replicate_offsets) con
res_chars.reserve(chars.size() / col_size * replicate_offsets.back());
res_offsets.reserve(replicate_offsets.back());
- T prev_replicate_offset = 0;
- T prev_string_offset = 0;
T current_new_offset = 0;
-
for (size_t i = 0; i < col_size; ++i) {
- T size_to_replicate = replicate_offsets[i] - prev_replicate_offset;
- T string_size = offsets[i] - prev_string_offset;
+ size_t size_to_replicate = replicate_offsets[i] - replicate_offsets[i
- 1];
+ T string_size = offsets[i] - offsets[i - 1];
+
+ check_chars_length(res_chars.size() + size_to_replicate * string_size,
+ res_offsets.size() + size_to_replicate, col_size);
+ res_chars.resize(res_chars.size() + size_to_replicate * string_size);
Review Comment:
add check `check_chars_length`
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