[Bug target/126652] [17 regression] error: conflicting declaration of ‘int64_t vaddd_s64(int64_t, int64_t)’ with ‘C’ linkage

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126652

--- Comment #1 from Andreas Schwab <sch...@linux-m68k.org> ---
This comes from <xxhash.h> which includes <arm_neon.h> within an extern "C"
block.