cmd/cover: 'GoCover_0 redeclared in this block' error with SWIG example

[michael-schaller]

What does 'go version' print?
Tested under these versions:
go version go1.3.3 linux/amd64
go version go1.4rc2 linux/amd64


What steps reproduce the problem?
Run 'go test -coverprofile=coverage.out' for this example:
https://gist.github.com/michael-schaller/94a2ee39bde248c83742


What happened?
$ go test -coverprofile=coverage.out
# example
./example_test.go:8: undefined: NewExample
./example_test.go:9: undefined: DeleteExample
/tmp/go-build051079047/example/_test/_obj_test/example.go:12: GoCover_0 redeclared in
this block
    previous declaration at $WORK/example/_test/_obj_test/example.go:12
FAIL    example [build failed]


What should have happened instead?
Clean build as with 'go test -v' + coverage analysis.
Here is the 'go test -v' output:
$ go test -v
=== RUN TestExample
--- PASS: TestExample (0.00s)
PASS
ok      example 0.002s

[michael-schaller]

Comment 1:

SWIG version: 3.0.2

[ianlancetaylor]

Comment 2:

Labels changed: added repo-tools, release-none.

[gopherbot]

Change https://golang.org/cl/77155 mentions this issue: cmd/go: run cover before cgo