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catchpanic.go
// Copyright 2017 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build !plan9 && !windows // +build !plan9,!windows package main /* #include <signal.h> #include <stdlib.h> #include <string.h> static void abrthandler(int signum) { if (signum == SIGABRT) { exit(0); // success } } void registerAbortHandler() { struct sigaction act; memset(&act, 0, sizeof act); act.sa_handler = abrthandler; sigaction(SIGABRT, &act, NULL); } static void __attribute__ ((constructor)) sigsetup(void) { if (getenv("CGOCATCHPANIC_EARLY_HANDLER") == NULL) return; registerAbortHandler(); } */ import "C" import "os" func init() { register("CgoCatchPanic", CgoCatchPanic) } // Test that the SIGABRT raised by panic can be caught by an early signal handler. func CgoCatchPanic() { if _, ok := os.LookupEnv("CGOCATCHPANIC_EARLY_HANDLER"); !ok { C.registerAbortHandler() } panic("catch me") }
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