What steps will reproduce the problem?
1. Run "go test -v" on this file:
package p
import (
"bytes"
"fmt"
"testing"
)
func TestTest(t *testing.T) {
buf := new(bytes.Buffer)
for i := 1; i < 50000; i++ {
fmt.Fprintf(buf, "number %d\n", i)
}
t.Log(buf.String())
}
What is the expected output? What do you see instead?
Expected:
=== RUN TestTest
--- PASS: TestTest (0.06 seconds)
pkg_test.go:14: number 1
number 2
number 3
...
number 49997
number 49998
number 49999
PASS
ok testmap 10.129s
Got:
=== RUN TestTest
throw: runtime: out of memory
goroutine 3 [running]:
----- stack segment boundary -----
testing.decorate(0xf8b095f00d, 0x9400d, 0x9401a00000000, 0xf8b095f00d, 0x9400d, ...)
/usr/lib/go/src/pkg/testing/testing.go:149 +0x21a
testing.decorate(0xf8b095f000, 0x9401a, 0x9402600000000, 0xf8b08ca00d, 0x94019, ...)
/usr/lib/go/src/pkg/testing/testing.go:158 +0x33c
testing.decorate(0xf8b08ca000, 0x94026, 0x9403200000000, 0xf8b082400d, 0x94025, ...)
/usr/lib/go/src/pkg/testing/testing.go:158 +0x33c
...
testing.decorate(0xf8ad642000, 0x943f2, 0x943fe00000000, 0xf8ad5ad00d, 0x943f1, ...)
/usr/lib/go/src/pkg/testing/testing.go:158 +0x33c
testing.decorate(0xf8ad5ad000, 0x943fe, 0x9440a00000000, 0xf8ad50700d, 0x943fd, ...)
/usr/lib/go/src/pkg/testing/testing.go:158 +0x33c
created by testing.RunTests
/usr/lib/go/src/pkg/testing/testing.go:349 +0x782
goroutine 1 [chan receive]:
testing.RunTests(0x400c00, 0x5604a8, 0x100000001, 0x1, 0x5564a0, ...)
/usr/lib/go/src/pkg/testing/testing.go:350 +0x7a5
testing.Main(0x400c00, 0x5604a8, 0x100000001, 0x5657c0, 0x0, ...)
/usr/lib/go/src/pkg/testing/testing.go:285 +0x7a
main.main()
/tmp/go-build554597359/testmap/_test/_testmain.go:43 +0x91
goroutine 2 [syscall]:
created by runtime.main
/build/src/go/src/pkg/runtime/proc.c:221
exit status 2
FAIL testmap 1.840s
Please use labels and text to provide additional information.
What steps will reproduce the problem? 1. Run "go test -v" on this file: package p import ( "bytes" "fmt" "testing" ) func TestTest(t *testing.T) { buf := new(bytes.Buffer) for i := 1; i < 50000; i++ { fmt.Fprintf(buf, "number %d\n", i) } t.Log(buf.String()) } What is the expected output? What do you see instead? Expected: === RUN TestTest --- PASS: TestTest (0.06 seconds) pkg_test.go:14: number 1 number 2 number 3 ... number 49997 number 49998 number 49999 PASS ok testmap 10.129s Got: === RUN TestTest throw: runtime: out of memory goroutine 3 [running]: ----- stack segment boundary ----- testing.decorate(0xf8b095f00d, 0x9400d, 0x9401a00000000, 0xf8b095f00d, 0x9400d, ...) /usr/lib/go/src/pkg/testing/testing.go:149 +0x21a testing.decorate(0xf8b095f000, 0x9401a, 0x9402600000000, 0xf8b08ca00d, 0x94019, ...) /usr/lib/go/src/pkg/testing/testing.go:158 +0x33c testing.decorate(0xf8b08ca000, 0x94026, 0x9403200000000, 0xf8b082400d, 0x94025, ...) /usr/lib/go/src/pkg/testing/testing.go:158 +0x33c ... testing.decorate(0xf8ad642000, 0x943f2, 0x943fe00000000, 0xf8ad5ad00d, 0x943f1, ...) /usr/lib/go/src/pkg/testing/testing.go:158 +0x33c testing.decorate(0xf8ad5ad000, 0x943fe, 0x9440a00000000, 0xf8ad50700d, 0x943fd, ...) /usr/lib/go/src/pkg/testing/testing.go:158 +0x33c created by testing.RunTests /usr/lib/go/src/pkg/testing/testing.go:349 +0x782 goroutine 1 [chan receive]: testing.RunTests(0x400c00, 0x5604a8, 0x100000001, 0x1, 0x5564a0, ...) /usr/lib/go/src/pkg/testing/testing.go:350 +0x7a5 testing.Main(0x400c00, 0x5604a8, 0x100000001, 0x5657c0, 0x0, ...) /usr/lib/go/src/pkg/testing/testing.go:285 +0x7a main.main() /tmp/go-build554597359/testmap/_test/_testmain.go:43 +0x91 goroutine 2 [syscall]: created by runtime.main /build/src/go/src/pkg/runtime/proc.c:221 exit status 2 FAIL testmap 1.840s Please use labels and text to provide additional information.