[Bug tree-optimization/86848] ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86848

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is in
https://github.com/cjdelisle/cjdns/blob/crashey/memory/BufferAllocator.c

/* Define alignment as the size of a pointer which is usually 4 or 8 bytes. */
#define ALIGNMENT sizeof(char*)

That should be different; maybe sizeof(uint64_t) or __alignof__(uint64_t). 
There might be a C99/C14 macro that you could use.