https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64277
--- Comment #9 from Ilya Enkovich <enkovich.gnu at gmail dot com> --- Nice solution for this problem would be to have a better estimation of maximum loop iterations number. Currently array size and index step are used to get the maximum ignoring starting index value range. Another way to solve the problem is to disable warnings for code generated by cunroll in case it cannot compute exact number of iterations. I attach a patch which does it. This bug is hit multiple times on Android build with GCC 4.9. With this fix we have a clean Android build with GCC 4.9.
