runtime: TestGdbPython fails on tip at fde4b9ed14 using gdb v8.2 #28499
Description
What version of Go are you using (go version)?
go version devel +6e2a13535f Wed Oct 31 11:36:39 2018 +0700 linux/amd64
What operating system and processor architecture are you using (go env)?
GOARCH="amd64"
GOBIN="/home/ms/bin"
GOCACHE="/home/ms/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/ms/go"
GOPROXY=""
GORACE="history_size=7"
GOROOT="/home/ms/Programs/go"
GOTMPDIR=""
GOTOOLDIR="/home/ms/Programs/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build877907951=/tmp/go-build -gno-record-gcc-switches"
What did you do?
Build the Go compiler from source.
What did you expect to see?
New Go compiler successfully build.
What did you see instead?
ok regexp/syntax 0.618s
--- FAIL: TestGdbPython (1.71s)
runtime-gdb_test.go:64: gdb version 8.2
runtime-gdb_test.go:213: gdb output: Loading Go Runtime support.
Loaded Script
Yes /home/ms/git/go/src/runtime/runtime-gdb.py
Breakpoint 1 at 0x47f770: file /home/ms/git/go/src/fmt/print.go, line 274.
[New LWP 1749]
[New LWP 1750]
[New LWP 1751]
[New LWP 1752]
Thread 1 "a.exe" hit Breakpoint 1, fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
274 func Println(a ...interface{}) (n int, err error) {
BEGIN info goroutines
* 1 running runtime.systemstack_switch
2 waiting runtime.gopark
3 waiting runtime.gopark
4 waiting runtime.gopark
END
#1 0x0000000000485c47 in main.main () at /tmp/go-build133295970/main.go:14
14 fmt.Println("hi")
BEGIN print mapvar
$1 = map[string]string = {[0x4b658d "abc"] = 0x4b6599 "def", [0x4b65a5 "ghi"] = 0x4b65ae "jkl"}
END
BEGIN print strvar
$2 = 0x4b658d "abc"
END
BEGIN info locals
mapvar = map[string]string = {[0x4b658d "abc"] = 0x4b6599 "def", [0x4b65a5 "ghi"] = 0x4b65ae "jkl"}
strvar = 0x4b658d "abc"
slicevar = {array = 0xc000096000, len = 4941197, cap = 3}
END
#0 fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
274 func Println(a ...interface{}) (n int, err error) {
BEGIN goroutine 1 bt
#0 fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
#1 0x0000000000485c47 in main.main () at /tmp/go-build133295970/main.go:14
END
BEGIN goroutine 2 bt
#0 runtime.gopark (unlockf=<optimized out>, lock=0x551b50 <runtime.forcegc>, reason=16 '\020', traceEv=20 '\024', traceskip=1) at /home/ms/git/go/src/runtime/proc.go:303
#1 0x0000000000428f03 in runtime.goparkunlock (lock=0x551b50 <runtime.forcegc>, reason=16 '\020', traceEv=20 '\024', traceskip=1) at /home/ms/git/go/src/runtime/proc.go:308
#2 0x0000000000428cca in runtime.forcegchelper () at /home/ms/git/go/src/runtime/proc.go:251
#3 0x000000000044fd41 in runtime.goexit () at /home/ms/git/go/src/runtime/asm_amd64.s:1340
#4 0x0000000000000000 in ?? ()
END
Breakpoint 2 at 0x485c72: file /tmp/go-build133295970/main.go, line 19.
hi
Thread 1 "a.exe" hit Breakpoint 2, main.main () at /tmp/go-build133295970/main.go:19
19 } // END_OF_PROGRAM
BEGIN goroutine 1 bt at the end
#0 main.main () at /tmp/go-build133295970/main.go:19
END
runtime-gdb_test.go:274: info locals failed: mapvar = map[string]string = {[0x4b658d "abc"] = 0x4b6599 "def", [0x4b65a5 "ghi"] = 0x4b65ae "jkl"}
strvar = 0x4b658d "abc"
slicevar = {array = 0xc000096000, len = 4941197, cap = 3}
--- FAIL: TestGdbPythonCgo (2.25s)
runtime-gdb_test.go:64: gdb version 8.2
runtime-gdb_test.go:213: gdb output: Loading Go Runtime support.
Loading Go Runtime support.
Breakpoint 1 at 0x481180: file /home/ms/git/go/src/fmt/print.go, line 274.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff5b62700 (LWP 1959)]
[New Thread 0x7fffeffff700 (LWP 1962)]
[New Thread 0x7ffff5361700 (LWP 1964)]
[New Thread 0x7ffff4b60700 (LWP 1965)]
[New Thread 0x7fffef7fe700 (LWP 1966)]
Thread 1 "a.exe" hit Breakpoint 1, fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
274 func Println(a ...interface{}) (n int, err error) {
BEGIN info goroutines
* 1 running runtime.systemstack_switch
2 waiting runtime.gopark
3 waiting runtime.gopark
4 waiting runtime.gopark
END
#1 0x0000000000487657 in main.main () at /tmp/go-build772824409/main.go:15
15 fmt.Println("hi")
BEGIN print mapvar
$1 = map[string]string = {[0x4b95ad "abc"] = 0x4b95b9 "def", [0x4b95c5 "ghi"] = 0x4b95ce "jkl"}
END
BEGIN print strvar
$2 = 0x4b95ad "abc"
END
BEGIN info locals
mapvar = map[string]string = {[0x4b95ad "abc"] = 0x4b95b9 "def", [0x4b95c5 "ghi"] = 0x4b95ce "jkl"}
strvar = 0x4b95ad "abc"
slicevar = {array = 0xc0000a4000, len = 4953517, cap = 3}
END
#0 fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
274 func Println(a ...interface{}) (n int, err error) {
BEGIN goroutine 1 bt
#0 fmt.Println (a=..., n=<optimized out>, err=...) at /home/ms/git/go/src/fmt/print.go:274
#1 0x0000000000487657 in main.main () at /tmp/go-build772824409/main.go:15
END
BEGIN goroutine 2 bt
#0 runtime.gopark (unlockf=<optimized out>, lock=0x556ca0 <runtime.forcegc>, reason=16 '\020', traceEv=20 '\024', traceskip=1) at /home/ms/git/go/src/runtime/proc.go:303
#1 0x000000000042a843 in runtime.goparkunlock (lock=0x556ca0 <runtime.forcegc>, reason=16 '\020', traceEv=20 '\024', traceskip=1) at /home/ms/git/go/src/runtime/proc.go:308
#2 0x000000000042a60a in runtime.forcegchelper () at /home/ms/git/go/src/runtime/proc.go:251
#3 0x0000000000451811 in runtime.goexit () at /home/ms/git/go/src/runtime/asm_amd64.s:1340
#4 0x0000000000000000 in ?? ()
END
Breakpoint 2 at 0x487682: file /tmp/go-build772824409/main.go, line 20.
hi
Thread 1 "a.exe" hit Breakpoint 2, main.main () at /tmp/go-build772824409/main.go:20
20 } // END_OF_PROGRAM
BEGIN goroutine 1 bt at the end
#0 main.main () at /tmp/go-build772824409/main.go:20
END
runtime-gdb_test.go:274: info locals failed: mapvar = map[string]string = {[0x4b95ad "abc"] = 0x4b95b9 "def", [0x4b95c5 "ghi"] = 0x4b95ce "jkl"}
strvar = 0x4b95ad "abc"
slicevar = {array = 0xc0000a4000, len = 4953517, cap = 3}
FAIL
FAIL runtime 39.656s