https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97969
--- Comment #2 from Paul Sokolovsky <pmiscml at gmail dot com> --- To confirm, GCC 9.3.1 from "gcc-arm-none-eabi-9-2020-q2-update" (as distributed by Arm from https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm) also has this issue.