On 07/20/2018 02:55 PM, Ian Lance Taylor wrote:
Thanks. But when binutils.test runs /usr/bin/nm -n, it doesn't see anything? I'm actually not quite clear on what the problem is. Ian

There is a failure when running all.bash as follows:

ok      cmd/trace       0.028s
--- FAIL: TestObjFile (0.17s)
binutils_test.go:237: SourceLine for main: expect [{main /tmp/hello.c 3}]; got [{main 0}]
FAIL
FAIL    cmd/vendor/github.com/google/pprof/internal/binutils 0.371s


A similar failure occurs when running the binutils test alone as follows:

go tool dist test -run cmd/vendor/github.com/google/pprof/internal/binutils


It appears that the process running binutils.test forks a process which calls /usr/bin/nm. This latter process appears to complete correctly (zero status), and the output of nm can be seen in the strace log. The process running "binutils.test" appears to fail shortly after the "/usr/binutils.test" returns.

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