Seems that checkStringLength in t_string.c has a hard coded check of "if (size > 51210241024) {" and is called by append and setRange commands.

Comment From: soloestoy

See commit 3cba2c42dd2c7eac67441a7c09d3070506fcc573 in PR #4633.

Comment From: filipecosta90

closing this one given the above comment of @soloestoy .