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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/siginfo-arch.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/siginfo-arch.h

     1	/* Architecture-specific adjustments to siginfo_t.  x86 version.  */
     2	#ifndef _BITS_SIGINFO_ARCH_H
     3	#define _BITS_SIGINFO_ARCH_H 1
     4	
     5	#if defined __x86_64__ && __WORDSIZE == 32
     6	/* si_utime and si_stime must be 4 byte aligned for x32 to match the
     7	   kernel.  We align siginfo_t to 8 bytes so that si_utime and
     8	   si_stime are actually aligned to 8 bytes since their offsets are
     9	   multiple of 8 bytes.  Note: with some compilers, the alignment
    10	   attribute would be ignored if it were put in __SI_CLOCK_T instead
    11	   of encapsulated in a typedef.  */
    12	typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t;
    13	# define __SI_ALIGNMENT __attribute__ ((__aligned__ (8)))
    14	# define __SI_CLOCK_T __sigchld_clock_t
    15	#endif
    16	
    17	#endif