Turns out that Linux version was missing alignment for the data segment and the addresses of all the variables were moving in and out of alignment depending on the exact size of the preceding code/text segments. MATCH is probably vulnerable because it uses many variables that should be aligned.

Please try it out with the alignment added in i0jhl.

I'm now seeing the same 0.1 second speedups in i0jhl that I saw in i0j8x.
Edit: Also all the tests are the same speed or faster than hykpg.