GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/xry111/go"
GORACE=""
GOROOT="/usr"
GOTOOLDIR="/usr/lib64/gcc/x86_64-pc-linux-gnu/7.2.1"
GCCGO="/usr/bin/gccgo-7.2"
CC="/usr/bin/gcc-7.2"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build361560552=/tmp/go-build -gno-record-gcc-switches"
CXX="/usr/bin/g++-7.2"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

package main

/*
#cgo CFLAGS: -pthread
#cgo LDFLAGS: -pthread
#include <pthread.h>
#include <signal.h>
#include <stdio.h>

__attribute__((constructor))
static void init(void) {
	sigset_t sset;
	struct sigevent sigev;
	struct sigaction sigact;
	struct itimerspec spec;

	sigemptyset(&sset);
	sigaddset(&sset, SIGINT);
	pthread_sigmask(SIG_BLOCK, &sset, NULL);
}

void *threadfunc(void *dummy) {
	sigset_t sset;
	siginfo_t info;

	sigemptyset(&sset);
	sigaddset(&sset, SIGINT);

	while (1) {
		int sn = sigwaitinfo(&sset, &info);
		printf("%d\n", sn);
		if (sn == -1)
			perror("sigwaitinfo");
	}
}

pthread_t thread;

int StartThread()
{
	return pthread_create(&thread, NULL, &threadfunc, NULL);
}
*/
import "C"

func main() {
	C.StartThread()
	ch := make(chan struct{})
	<-ch
}

    If the Go program is started with a non-empty signal mask, that will
    generally be honored. However, some signals are explicitly unblocked:
    the synchronous signals, SIGILL, SIGTRAP, SIGSTKFLT, SIGCHLD, SIGPROF,
    and, on GNU/Linux, signals 32 (SIGCANCEL) and 33 (SIGSETXID) (SIGCANCEL
    and SIGSETXID are used internally by glibc).

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff72638ec in runtime.futex (val3=0, addr2=0x0, ts=0x7ffff238ac70, val=0, op=0, addr=0x7ffff7dc1d50 <runtime.sched+176>)
    at ../../../libgo/go/runtime/os_linux.go:17
#2  runtime.futexsleep (val=0, ns=60000000000, addr=0x7ffff7dc1d50 <runtime.sched+176>) at ../../../libgo/go/runtime/os_linux.go:65
#3  runtime.notetsleep_internal (n=0x7ffff7dc1d50 <runtime.sched+176>, ns=60000000000) at ../../../libgo/go/runtime/lock_futex.go:186
#4  0x00007ffff7264974 in runtime.notetsleep (n=n@entry=0x7ffff7dc1d50 <runtime.sched+176>, ns=<optimized out>)
    at ../../../libgo/go/runtime/lock_futex.go:209
#5  0x00007ffff7277637 in runtime.sysmon () at ../../../libgo/go/runtime/proc.go:2157
#6  0x00007ffff6e937a4 in runtime_mstart (mp=<optimized out>) at ../../../libgo/runtime/proc.c:726
#7  0x00007ffff5ba3404 in start_thread (arg=0x7ffff238b700) at pthread_create.c:334
#8  0x00007ffff58e102d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109