[Bug go/85037] SIGSEGV in gotools testsuite affects several tests

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85037

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
The failure recently [1] changed to
"fatal error: mallocgc called with gcphase == _GCmarktermination":

FAIL: TestCgoSignalDeadlock
        crash_test.go:55: building testprogcgo []: exit status 2
                #
_/space/uros/gcc-svn/trunk/libgo/go/runtime/testdata/testprogcgo
                fatal error: mallocgc called with gcphase == _GCmarktermination

                goroutine 1 [running]:
                runtime.dopanic
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/panic.go:912
                runtime.throw
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/panic.go:822
                runtime.mallocgc
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/malloc.go:602
                runtime.newobject
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/malloc.go:873
                os.newProcess
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/os/exec.go:25
                os.startProcess
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/os/exec_posix.go:50
                os.StartProcess
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/os/exec.go:102
                os_exec.Cmd.Start
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/os/exec/exec.go:379
                os_exec.Cmd.Run
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/os/exec/exec.go:302
                main.run
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/util.go:62
                main.runGcc
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/gcc.go:1736
                main.Package.gccDefines
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/gcc.go:1692
                main.Package.loadDefines
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/gcc.go:203
                main.Package.Translate
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/gcc.go:185
                main.main
                       
/space/homedirs/uros/gcc-svn/trunk/gotools/../libgo/go/cmd/cgo/main.go:333
                runtime.main
                       
/space/homedirs/uros/gcc-svn/trunk/libgo/go/runtime/proc.go:225


[1] https://gcc.gnu.org/ml/gcc-testresults/2018-05/msg00816.html