Shell scripts do not work correctly on macOS

[danhd123]

While attempting to add Objective-C (NSJSONSerialization) tests, I found that the test scripts do not work correctly on macOS; the output is always 2. The first time I ran it, I got a number of Abort Traps from broken pipes between the scripts:

./utils/binary_search.sh: line 1: 65239 Broken pipe: 13 ./utils/deep_json_array.sh $n 65240 Abort trap: 6 | $json_parsing_command 2> /dev/null > /dev/null
repeated several times with different process numbers, followed by
./utils/binary_search.sh: line 1: 65292 Done ./utils/deep_json_array.sh $n 65293 Abort trap: 6 | $json_parsing_command 2> /dev/null > /dev/null
repeated several times with different process numbers, followed by
2
Subsequent runs just output 2

(Running the tests manually, NSJSONSerialization tops out at 512 levels of nesting.)

macOS 10.14.6, GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin18)

[lovasoa]

Can you give more details ? The shell script seems to be working the same in MacOS and linux for me.
The Broken pipe [...] Abort trap: 6 messages seem to signal that the underlying program segfaulted. Maybe you can make a pull request with your Objective-C project so that we can have a look at it together ?

[lovasoa]

I just added swift to the comparison, and the scripts seem to be working fine on the MacOS virtual machines from Travis CI too:
https://travis-ci.org/lovasoa/bad_json_parsers/jobs/611422163