https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91402
--- Comment #1 from Andrew Kaster <andrewdkaster at gmail dot com> --- As a note, I was able to reproduce using godbolt, but they don't have very recent versions of gcc for powerpc: https://godbolt.org/z/20lNhf Of the available compilers: No warnings: power64le clang (trunk) powerpc64 clang (trunk) PowerPC gcc 4.8.5 Warnings: power64 AT 12.0 power64le AT 12.0 power64le gcc 6.3.0