Machine running Ubuntu 14.04 on x64

CHROME VERSION
39.0.2171.95
OS VERSION
Linux: 3.13.0-43-generic

Firefox 34.0

Chrome output:
Max string length is:
268435440 characters
536870880 bytes
511.9999694824219 megabytes
Store longest string
Try to read first char
a
Try to read last char
a
Try to read length
268435440


Firefox output:
"The maximum string length is 268435455"