Comment 1 for bug 1709716

It’s known that mksh’s testsuite exhibits problems in the infrastructure (kernel, libraries, toolchain, compiler).

In this case, GCC’s LTO (and before that, -fwhole-program --combine) is a repeat offender of breaking code.

If your builds exhibit this problem, you should *disable LTO for your _entire_ operating system*. (I’ve seen this GCC version produce LTO bugs on other distros as well, it’s wrong code generation, but LTO bugs are not interesting to GCC developers.)