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a413908dd0
Introduce GOOS=ios for iOS systems. GOOS=ios matches "darwin" build tag, like GOOS=android matches "linux" and GOOS=illumos matches "solaris". Only ios/arm64 is supported (ios/amd64 is not). GOOS=ios and GOOS=darwin remain essentially the same at this point. They will diverge at later time, to differentiate macOS and iOS. Uses of GOOS=="darwin" are changed to (GOOS=="darwin" || GOOS=="ios"), except if it clearly means macOS (e.g. GOOS=="darwin" && GOARCH=="amd64"), it remains GOOS=="darwin". Updates #38485. Change-Id: I4faacdc1008f42434599efb3c3ad90763a83b67c Reviewed-on: https://go-review.googlesource.com/c/go/+/254740 Trust: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !windows,!android
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// Test that the Go runtime still works if C code changes the signal stack.
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package cgotest
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/*
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef _AIX
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// On AIX, SIGSTKSZ is too small to handle Go sighandler.
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#define CSIGSTKSZ 0x4000
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#else
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#define CSIGSTKSZ SIGSTKSZ
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#endif
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static stack_t oss;
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static char signalStack[CSIGSTKSZ];
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static void changeSignalStack(void) {
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stack_t ss;
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memset(&ss, 0, sizeof ss);
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ss.ss_sp = signalStack;
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ss.ss_flags = 0;
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ss.ss_size = CSIGSTKSZ;
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if (sigaltstack(&ss, &oss) < 0) {
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perror("sigaltstack");
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abort();
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}
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}
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static void restoreSignalStack(void) {
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#if (defined(__x86_64__) || defined(__i386__)) && defined(__APPLE__)
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// The Darwin C library enforces a minimum that the kernel does not.
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// This is OK since we allocated this much space in mpreinit,
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// it was just removed from the buffer by stackalloc.
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oss.ss_size = MINSIGSTKSZ;
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#endif
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if (sigaltstack(&oss, NULL) < 0) {
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perror("sigaltstack restore");
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abort();
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}
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}
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static int zero(void) {
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return 0;
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}
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*/
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import "C"
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import (
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"runtime"
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"testing"
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)
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func testSigaltstack(t *testing.T) {
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switch {
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case runtime.GOOS == "solaris", runtime.GOOS == "illumos", (runtime.GOOS == "darwin" || runtime.GOOS == "ios") && runtime.GOARCH == "arm64":
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t.Skipf("switching signal stack not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
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}
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C.changeSignalStack()
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defer C.restoreSignalStack()
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defer func() {
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if recover() == nil {
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t.Error("did not see expected panic")
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}
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}()
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v := 1 / int(C.zero())
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t.Errorf("unexpected success of division by zero == %d", v)
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}
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