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test/fixedbugs/issue46234.go
103 строки
2 KB
qmuntal
test/fixedbugs: increase issue46234 test timeout
10 мар 2026, 10:37
10 мар 2026, 10:37
b0057a4
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// buildrun //go:build !js && !wasip1 // Copyright 2021 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. // Ensure that runtime traceback does not infinite loop for // the testcase below. package main import ( "bytes" "io/ioutil" "log" "os" "os/exec" "path/filepath" ) const prog = ` package main import "context" var gpi *int type nAO struct { eE bool } type NAO func(*nAO) func WEA() NAO { return func(o *nAO) { o.eE = true } } type R struct { cM *CM } type CM int type A string func (m *CM) NewA(ctx context.Context, cN string, nn *nAO, opts ...NAO) (*A, error) { for _, o := range opts { o(nn) } s := A("foo") return &s, nil } func (r *R) CA(ctx context.Context, cN string, nn *nAO) (*int, error) { cA, err := r.cM.NewA(ctx, cN, nn, WEA(), WEA()) if err == nil { return nil, err } println(cA) x := int(42) return &x, nil } func main() { c := CM(1) r := R{cM: &c} var ctx context.Context nnr := nAO{} pi, err := r.CA(ctx, "foo", nil) if err != nil { panic("bad") } println(nnr.eE) gpi = pi } ` func main() { dir, err := ioutil.TempDir("", "46234") if err != nil { log.Fatal(err) } defer os.RemoveAll(dir) file := filepath.Join(dir, "main.go") if err := ioutil.WriteFile(file, []byte(prog), 0655); err != nil { log.Fatalf("Write error %v", err) } cmd := exec.Command("go", "run", file) output, err := cmd.CombinedOutput() if err == nil { log.Fatalf("Passed, expected an error") } want := []byte("nil pointer dereference") if !bytes.Contains(output, want) { log.Fatalf("Unmatched error message %q:\nin\n%s\nError: %v", want, output, err) } }