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#include <sys/cdefs.h>
#include <sys/param.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if defined(__AMDGCN__) || defined(__nvptx__)
/* Global constructors not supported on this target, yet. */
uintptr_t __stack_chk_guard = 0x00000aff; /* 0, 0, '\n', 255 */
#else
uintptr_t __stack_chk_guard = 0;
void
__attribute__((__constructor__))
__stack_chk_init (void)
{
if (__stack_chk_guard != 0)
return;
#if defined(__CYGWIN__) || defined(__rtems__)
arc4random_buf(&__stack_chk_guard, sizeof(__stack_chk_guard));
#else
/* If getentropy is not available, use the "terminator canary". */
((unsigned char *)&__stack_chk_guard)[0] = 0;
((unsigned char *)&__stack_chk_guard)[1] = 0;
((unsigned char *)&__stack_chk_guard)[2] = '\n';
((unsigned char *)&__stack_chk_guard)[3] = 255;
#endif
}
#endif
void
__attribute__((__noreturn__))
__stack_chk_fail (void)
{
char msg[] = "*** stack smashing detected ***: terminated\n";
write (2, msg, strlen (msg));
raise (SIGABRT);
_exit (127);
}
#ifdef __ELF__
void
__attribute__((visibility ("hidden")))
__stack_chk_fail_local (void)
{
__stack_chk_fail();
}
#endif