cmd/go: buildmode=pie broken with -linkmode=internal and cgo #18968
Description
What version of Go are you using (go version)?
go version go1.8rc3 linux/amd64
What did you do?
$ go test std -buildmode=pie -short
30 packages in the standard library fail with segfault. The segfault happens very early on (appears to be in the dynamic linker/loader). In some cases, simply trying to load a test binary in gdb crashes gdb.
It worked fine with go1.7, so this is a regression.
Tried this on Gentoo, Ubuntu, and Debian. Same failures on all three systems.
Also tested linux/386, linux/arm, android/arm, and android/arm64. No issues there. This is specific to amd64 (perhaps related to #18820).
Here's what the output looks like (stripping out the packages that passed):
signal: segmentation fault (core dumped)
FAIL context 0.165s
signal: segmentation fault (core dumped)
FAIL crypto/tls 0.258s
signal: segmentation fault (core dumped)
FAIL crypto/x509 0.134s
signal: segmentation fault (core dumped)
FAIL debug/elf 0.134s
signal: segmentation fault (core dumped)
FAIL encoding/gob 0.151s
signal: segmentation fault (core dumped)
FAIL encoding/json 0.212s
signal: segmentation fault (core dumped)
FAIL encoding/pem 0.172s
signal: segmentation fault (core dumped)
FAIL expvar 0.211s
signal: segmentation fault (core dumped)
FAIL log/syslog 0.152s
signal: segmentation fault (core dumped)
FAIL mime/multipart 0.145s
signal: segmentation fault (core dumped)
FAIL net 0.169s
signal: segmentation fault (core dumped)
FAIL net/http 0.272s
signal: segmentation fault (core dumped)
FAIL net/http/cgi 0.211s
signal: segmentation fault (core dumped)
FAIL net/http/cookiejar 0.221s
signal: segmentation fault (core dumped)
FAIL net/http/fcgi 0.182s
signal: segmentation fault (core dumped)
FAIL net/http/httptest 0.198s
signal: segmentation fault (core dumped)
FAIL net/http/httptrace 0.219s
signal: segmentation fault (core dumped)
FAIL net/http/httputil 0.198s
signal: segmentation fault (core dumped)
FAIL net/mail 0.146s
signal: segmentation fault (core dumped)
FAIL net/rpc 0.310s
signal: segmentation fault (core dumped)
FAIL net/rpc/jsonrpc 0.306s
signal: segmentation fault (core dumped)
FAIL net/smtp 0.170s
signal: segmentation fault (core dumped)
FAIL net/textproto 0.142s
signal: segmentation fault (core dumped)
FAIL net/url 0.201s
signal: segmentation fault (core dumped)
FAIL os/exec 0.205s
signal: segmentation fault (core dumped)
FAIL os/user 0.188s
signal: segmentation fault (core dumped)
FAIL runtime 0.206s
signal: segmentation fault (core dumped)
FAIL runtime/trace 0.147s
signal: segmentation fault (core dumped)
FAIL syscall 0.157s
signal: segmentation fault (core dumped)
FAIL vendor/golang_org/x/net/lex/httplex 0.149s