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