[Bug c/56180] Strange behaviour with optimization (using K&R C)

[paulo_torrens at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56180

--- Comment #3 from Paulo Torrens <paulo_torrens at hotmail dot com> 2013-02-02 21:45:20 UTC ---
According to the man page here on Mac:

Only one character of push-back is guaranteed, but as long as there is
sufficient memory, an effectively infinite amount of push-back is allowed.


And yeah, you are right (thank you!), that j was one byte ahead, but, still...
shouldn't the behaviour be the same across optimization levels?