newlib/newlib/libc/sys/linux/machine/i386/include/setjmp.h - native_client/nacl-toolchain - Git at Google

 #define _JBLEN	9
 typedef	long __jmp_buf[_JBLEN];

 #define SP_INDEX 7
 #define _JMPBUF_UNWINDS(buf, address) \
   ((void *)(address) < (void *)(buf)[SP_INDEX])
	#define _JBLEN 9
	typedef long __jmp_buf[_JBLEN];

	#define SP_INDEX 7
	#define _JMPBUF_UNWINDS(buf, address) \
	((void )(address) < (void )(buf)[SP_INDEX])