mirror of
https://github.com/golang/go
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91f0f18100
The data race can lead to reads of partially initialized concurrently mutated symbol data. The change also adds a simple sanity test for Caller() and FuncForPC(). R=rsc CC=golang-dev https://golang.org/cl/4817058
48 lines
1021 B
Go
48 lines
1021 B
Go
// Copyright 2009 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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package runtime_test
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import (
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"runtime"
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"strings"
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"testing"
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)
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func TestCaller(t *testing.T) {
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procs := runtime.GOMAXPROCS(-1)
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c := make(chan bool, procs)
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for p := 0; p < procs; p++ {
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go func() {
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for i := 0; i < 1000; i++ {
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testCallerFoo(t)
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}
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c <- true
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}()
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defer func() {
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<-c
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}()
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}
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}
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func testCallerFoo(t *testing.T) {
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testCallerBar(t)
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}
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func testCallerBar(t *testing.T) {
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for i := 0; i < 2; i++ {
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pc, file, line, ok := runtime.Caller(i)
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f := runtime.FuncForPC(pc)
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if !ok ||
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!strings.HasSuffix(file, "symtab_test.go") ||
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(i == 0 && !strings.HasSuffix(f.Name(), "testCallerBar")) ||
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(i == 1 && !strings.HasSuffix(f.Name(), "testCallerFoo")) ||
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line < 5 || line > 1000 ||
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f.Entry() >= pc {
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t.Errorf("incorrect symbol info %d: %t %d %d %s %s %d",
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i, ok, f.Entry(), pc, f.Name(), file, line)
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}
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}
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}
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