runtime/pprof: go1.8 pprof proto output doesn't include symbol info.

[hyangah]

go1.8 release branch doesn't include https://go-review.googlesource.com/c/34192/
which confuses pprof that expects symbol info.

https://github.com/golang/go/commits/release-branch.go1.8/src/runtime/pprof

[aclements]

@hyangah, what do you mean by "confuses pprof that expects symbol info"?

[rsc]

I tested Go 1.8 and it works fine with the Go 1.8 go tool pprof (see google/pprof#120 (comment)).
What it doesn't work fine with is the current github.com/google/pprof.
People can and should be using go tool pprof instead.

Not for point release.

[rsc]

(Not even our bug.)