/* { dg-options "-fnon-call-exceptions" } */
/* With -fnon-call-exceptions 0 / 0 should not be eliminated.  */
/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
/* { dg-additional-options "-mcheck-zero-division" { target { loongarch*-*-* } } } */

#ifdef SIGNAL_SUPPRESS
#define DO_TEST 0
#elif defined(__powerpc__) || defined(__PPC__) || defined(__ppc__) || defined(__POWERPC__) || defined(__ppc)
/* On PPC division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__riscv)
/* On RISC-V division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__sh__)
/* On SH division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__v850__)
/* On V850 division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__MSP430__)
/* On MSP430 division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__RL78__)
/* On RL78 division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__RX__)
/* On RX division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__H8300H__) || defined(__H8300S__) || defined(__H8300SX__)
/* On H8/300H, H8S and H8SX division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__aarch64__)
/* On AArch64 integer division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__TMS320C6X__)
/* On TI C6X division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__VISIUM__)
/* On Visium division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__mips__) && !defined(__linux__)
/* MIPS divisions do trap by default, but libgloss targets do not
     intercept the trap and raise a SIGFPE.  The same is probably
     true of other bare-metal environments, so restrict the test to
     systems that use the Linux kernel.  */
#define DO_TEST 0
#elif defined(__mips16) && defined(__linux__)
/* Not all Linux kernels deal correctly the breakpoints generated by
     MIPS16 divisions by zero.  They show up as a SIGTRAP instead.  */
#define DO_TEST 0
#elif defined(__MICROBLAZE__)
/* We cannot rely on division by zero generating a trap. */
#define DO_TEST 0
#elif defined(__epiphany__)
/* Epiphany does not have hardware division, and the software implementation
     has truly undefined behavior for division by 0.  */
#define DO_TEST 0
#elif defined(__m68k__) && !defined(__linux__)
/* Attempting to trap division-by-zero in this way isn't likely to work on
     bare-metal m68k systems.  */
#define DO_TEST 0
#elif defined(__CRIS__)
/* No SIGFPE for CRIS integer division.  */
#define DO_TEST 0
#elif defined(__MMIX__)
/* By default we emit a sequence with DIVU, which "never signals an
   exceptional condition, even when dividing by zero".  */
#define DO_TEST 0
#elif defined(__arc__)
/* No SIGFPE for ARC integer division.  */
#define DO_TEST 0
#elif defined(__arm__) && defined(__ARM_EABI__)
#ifdef __ARM_ARCH_EXT_IDIV__
/* Hardware division instructions may not trap, and handle trapping
     differently anyway.  Skip the test if we have those instructions.  */
#define DO_TEST 0
#else
#include <signal.h>
/* ARM division-by-zero behavior is to call a helper function, which
     can do several different things, depending on requirements.  Emulate
     the behavior of other targets here by raising SIGFPE.  */
int __attribute__((used))
__aeabi_idiv0(int return_value) {
    raise(SIGFPE);
    return return_value;
}
#define DO_TEST 1
#endif
#elif defined(__nvptx__)
/* There isn't even a signal function.  */
#define DO_TEST 0
#elif defined(__csky__)
/* This presently doesn't raise SIGFPE even on csky-linux-gnu, much
     less bare metal.  See the implementation of __divsi3 in libgcc.  */
#define DO_TEST 0
#elif defined(__moxie__)
/* Not all moxie configurations may raise exceptions.  */
#define DO_TEST 0
#elif defined(__or1k__)
/* On OpenRISC division by zero does not trap.  */
#define DO_TEST 0
#elif defined(__pru__)
/* There isn't even a signal function.  */
#define DO_TEST 0
#else
#define DO_TEST 1
#endif

extern void abort(void);
extern void exit(int);

#if DO_TEST

#include <signal.h>

void sigfpe(int signum __attribute__((unused))) {
    exit(0);
}

#endif

/* When optimizing, the compiler is smart enough to constant fold the
   static unset variables i and j to produce 0 / 0, but it can't
   eliminate the assignment to the global k.  */
static int i;
static int j;
int k __attribute__((used));

int main() {
#if DO_TEST
    signal(SIGFPE, sigfpe);
    k = i / j;
    abort();
#else
    exit(0);
#endif
}
