https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79209
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target|aarch64 |aarch64, x86_64-*-* Priority|P3 |P2 Component|target |middle-end Known to work| |4.8.5, 4.9.4 Target Milestone|--- |5.5 Summary|AArch64: Inconsistent |[5/6/7 Regression] AArch64: |packed volatile bitfield |Inconsistent packed |accesses |volatile bitfield accesses Known to fail| |5.3.0 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Btw, also confirmed on x86_64 but it seems to work with GCC 4.8 and 4.9 there.