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https://issues.apache.org/jira/browse/ARROW-15228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17467278#comment-17467278
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Will Ayd edited comment on ARROW-15228 at 12/31/21, 4:27 PM:
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Gotcha. Does that assume then that I have a good idea of the general size of
the strings I'd eventually be storing? I am dealing with variable sized strings
whose size I don't know of in advance, though I know how many there are. I'm
guessing I would still need a safe append in that case?
-FWIW even if I add `ARROW_RETURN_NOT_OK(builder->ReserveData(1000));` right
after the Reserve call in the above example I still run into the same error-
was (Author: willayd):
Gotcha. Does that assume then that I have a good idea of the general size of
the strings I'd eventually be storing? I am dealing with variable sized strings
whose size I don't know of in advance, though I know how many there are. I'm
guessing I would still need a safe append in that case?
FWIW even if I add `ARROW_RETURN_NOT_OK(builder->ReserveData(1000));` right
after the Reserve call in the above example I still run into the same error
> StringBuilder UnsafeAppend causes EXC_BAD_ACCESS
> ------------------------------------------------
>
> Key: ARROW-15228
> URL: https://issues.apache.org/jira/browse/ARROW-15228
> Project: Apache Arrow
> Issue Type: Bug
> Reporter: Will Ayd
> Priority: Minor
>
> It seems that StringBuilder->UnsafeAppend produces a memory violation. This
> is on macOS Monterey with an intel chip if it matters. Below is a sample
> program that will reproduce the error:
> {code:java}
> #include <arrow/api.h>
> arrow::Status RunMain(int argc, char** argv) {
> auto builder = std::make_shared<arrow::StringBuilder>();
> ARROW_RETURN_NOT_OK(builder->Reserve(1));
> builder->UnsafeAppend(std::string("a"));
> return arrow::Status::OK();
> }
> int main(int argc, char** argv) {
> arrow::Status st = RunMain(argc, argv);
> if (!st.ok()) {
> return 1;
> }
> return 0;
> }{code}
>
> I could not reproduce with another builder type
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