fun.cc

#include <ctime>

#include <unistd.h>

namespace {

const double kTimePeriod = 0.1;

bool Crash() {
  std::time_t start = std::time(nullptr);
  usleep(50);
  std::time_t now = std::time(nullptr);
  if (std::difftime(start, now) >= kTimePeriod) {
    return false;
  }  
} 

} // anonymous namespace

int main(int /* unused: argc */, char** /* unused: argv */) {
  Crash();
  return 0;
}

fun.s

_ZN12_GLOBAL__N_15CrashEv:              # @_ZN12_GLOBAL__N_15CrashEv
        .cfi_startproc
# BB#0:
        pushq   %rbp
.Ltmp4:
        .cfi_def_cfa_offset 16
.Ltmp5:
        .cfi_offset %rbp, -16
        movq    %rsp, %rbp
.Ltmp6:
        .cfi_def_cfa_register %rbp
        subq    $32, %rsp
        xorl    %eax, %eax
        movl    %eax, %edi
        callq   time
        movl    $50, %edi
        movq    %rax, -8(%rbp)
        callq   usleep
        xorl    %edi, %edi
                                        # kill: RDI<def> EDI<kill>
        movl    %eax, -20(%rbp)         # 4-byte Spill
        callq   time
        movq    %rax, -16(%rbp)
        movq    -8(%rbp), %rdi
        movq    -16(%rbp), %rsi
        callq   difftime
        movsd   .LCPI1_0, %xmm1
        ucomisd %xmm1, %xmm0
        jb      .LBB1_2
# BB#1:
        xorl    %eax, %eax
        movb    %al, %cl
        andb    $1, %cl
        movzbl  %cl, %eax
        addq    $32, %rsp
        popq    %rbp
        retq
.LBB1_2:
        ud2
.Ltmp7:
        .size   _ZN12_GLOBAL__N_15CrashEv, .Ltmp7-_ZN12_GLOBAL__N_15CrashEv
        .cfi_endproc