On Sat, Jul 22, 2017 at 11:08 AM, Uros Bizjak <ubiz...@gmail.com> wrote:
>> This patch to the gotools Makefile adds tests to `make check`. We now
>> test the runtime package using the newly built go tool, and test that
>> cgo works by running the misc/cgo/test and misc/cgo/testcarchive
>> tests. Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu.
>> Committed to mainline.
>
> There is now only one remaining gotools testsuite failure on alpha:
>
> FAIL: TestBreakpoint
> crash_test.go:106: testprog Breakpoint exit status: exit status 2
> crash_test.go:310: output:
> SIGTRAP: trace trap
> PC=2199039253124 m=0 sigcode=0
>
> goroutine 1 [running]:
>
> goroutine 3 [runnable]:
> created by runtime.SetFinalizer
>
> /space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/mfinal.go:355
> +1280
>
>
>
> want output containing: runtime.Breakpoint
>
> I would like to debug this one failure only. Is there a way to run
> only one gotools test? Can you perhaps give a hint where to look in
> the source?
The test is TestBreakpoint in libgo/go/runtime/crash_test.go. It is
testing that if it runs a program that calls `runtime.Breakpoint`,
then `runtime.Breakpoint` will appear in the stack trace that the
program emits.
It does this by building a test program. The easy way to do this
yourself is to run `make install` in your GCC build directory, set
LD_LIBRARY_PATH if needed to include the newly installed libgo.so, and
then do
cd SRCDIR/libgo/go/runtime/testdata/testprog
go build # run the `go` program installed from gotools, building
./testprog; you can use `go build -o /tmp/x` if you like
./testprog Breakpoint
On my x86_64 system that prints the appended, which includes the
desired `runtime.Breakpoint` string. On your system it fails to print
a stack trace, but I don't know why.
Ian
SIGILL: illegal instruction
PC=140647499814795 m=0 sigcode=2
goroutine 1 [running]:
:0
runtime.Breakpoint
../../../gccgo3/libgo/go/runtime/proc.go:2812
main.Breakpoint
/home/iant/gofrontend3/libgo/go/runtime/testdata/testprog/deadlock.go:145
main.main
/home/iant/gofrontend3/libgo/go/runtime/testdata/testprog/main.go:34
:0
rax 0x40687c
rbx 0xc4200307e0
rcx 0x746e
rdx 0xc42003c388
rdi 0x7ffca81b3697
rsi 0x40d910
rbp 0x7feb0ac87eb0
rsp 0x7feb0ac87ea8
r8 0x17
r9 0x3
r10 0x7feb0ac87c70
r11 0x7feb0c43d780
r12 0xc42006e220
r13 0x40e6e0
r14 0x7feb0caf34c0
r15 0x0
rip 0x7feb0c43d78b
rflags 0x10202
cs 0x33
fs 0x0
gs 0x0
