/usr/include/x86_64-linux-gnu/bits/siginfo-consts-arch.h is in libc6-dev 2.27-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | /* Architecture-specific additional siginfo constants. */
#ifndef _BITS_SIGINFO_CONSTS_ARCH_H
#define _BITS_SIGINFO_CONSTS_ARCH_H 1
/* This architecture has no additional siginfo constants. */
#endif
|