by mikio.hr:

Before filing a bug, please check whether it has been fixed since
the latest release: run "hg pull -u" and retry what you did to
reproduce the problem.  Thanks.

What steps will reproduce the problem?
1. cd go/src
2. ./all.bash
3.

What is the expected output?
no FAIL

What do you see instead?
gopack grc _test/runtime/pprof.a _gotest_.6 
--- FAIL: pprof_test.TestCPUProfile (0.3 seconds)
    profile too short: [0x0 0x3 0x0 0x2710 0x0]
FAIL
make[1]: *** [test] Error 1
make: *** [runtime/pprof.test] Error 2

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g version 7860

Which operating system are you using?
darwin/amd64
Darwin Kernel Version 10.7.0: Sat Jan 29 15:16:10 PST 2011;
root:xnu-1504.9.37~1/RELEASE_X86_64 x86_64

Which revision are you using?  (hg identify)
fad73d342108 tip

Please provide any additional information below.