What steps will reproduce the problem?

GOPATH=`pwd` go test -compiler=gccgo -v iconv

What is the expected output?

GOPATH=`pwd` go test -v iconv

=== RUN TestIconv
--- PASS: TestIconv (0.00 seconds)
=== RUN TestIconvReverse
--- PASS: TestIconvReverse (0.00 seconds)
=== RUN TestError
--- PASS: TestError (0.00 seconds)
=== RUN TestConvertToUTF8
--- PASS: TestConvertToUTF8 (0.00 seconds)
=== RUN TestConvertBytesToUTF8
--- PASS: TestConvertBytesToUTF8 (0.00 seconds)
=== RUN TestBytes2
--- PASS: TestBytes2 (0.00 seconds)
=== RUN TestHang
--- PASS: TestHang (0.00 seconds)
=== RUN TestLong
--- PASS: TestLong (0.00 seconds)
PASS
ok      iconv   0.010s

What do you see instead?

GOPATH=`pwd` go test -compiler=gccgo -v iconv

=== RUN TestIconv-16
--- FAIL: TestIconv-16 (0.01 seconds)
        :0: Error on opening: Success
=== RUN TestIconvReverse-16
--- FAIL: TestIconvReverse-16 (0.00 seconds)
        :0: Error on opening: Success
=== RUN TestError-16
--- PASS: TestError-16 (0.00 seconds)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
exit status 2
FAIL    iconv   0.031s

Which compiler are you using (5g, 6g, 8g, gccgo)?

gccgo

Which operating system are you using?

linux amd64

Which revision are you using?  (hg identify)

go version weekly.2012-03-13 +a303acb0a5f2

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@185451
138bc75d-0d04-0410-961f-82ee72b054a4

Please provide any additional information below.

There seems to be a bug with returning the value of errno and another bug causing a
segfault.

Attachments:

1. iconv.go (2377 bytes)
2. iconv_test.go (3525 bytes)
3. main.go (595 bytes)