runtime: TestGdbPython* fails on solaris #20821
Description
On a development build of Solaris, TestGdbPythonCgo fails:
$ uname -a
SunOS darwin-sunw 5.12 s12_127 i86pc i386 i86pc
$ gdb --version
GNU gdb (GDB) 7.12.1
$ go version
go version devel +33b3cc1568 Tue Jun 27 20:45:38 2017 +0000 solaris/amd64
$ go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="solaris"
GOOS="solaris"
GOPATH="/builds/srwalker/gocode"
GORACE=""
GOROOT="/builds/srwalker/golang/go-trunk"
GOTOOLDIR="/builds/srwalker/golang/go/pkg/tool/solaris_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build788895360=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
$ go test -v -run TestGdbPythonCgo
=== RUN TestGdbPythonCgo
--- FAIL: TestGdbPythonCgo (2.51s)
runtime-gdb_test.go:55: gdb version 7.12
runtime-gdb_test.go:218: goroutine 1 bt failed: #0 0x00007fffbf25574a in __nanosleep () from /lib/64/libc.so.1
#1 0x00007fffbf23d8e3 in nanosleep () from /lib/64/libc.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
FAIL
exit status 1
FAIL runtime 2.520s
At the moment, it's unclear if this is due to GDB 7.12 or because of something else as all other runtime tests pass. I intend to investigate and root cause if possible soon.