cmd/go, misc/cgo: clang does not generate .edata sections

[zx2c4]

We're currently using the .edata section to check whether cgo generated a PE binary with the expected symbols. While binutils generates this section, clang's LLD does not. It still exports the symbols, but just doesn't have the .edata section. This issue is to track the (eventual) refactoring of those tests.

[gopherbot]

Change https://golang.org/cl/327549 mentions this issue: cmd/go, misc/cgo: skip test if no .edata

[zx2c4]

For now, CL 327549 just skips them.

[dmitshur]

Is this related to issue #46510?

[cagedmantis]

/cc @ianlancetaylor

[ianlancetaylor]

To clarify, this is only related to tests.

[zx2c4]

Is this related to issue #46510?

Yes, same thing basically. There's one other test that uses .edata in addition to the one mentioned in that issue. Both changed in 24cff0f

[gopherbot]

Change https://golang.org/cl/328049 mentions this issue: cmd/go, misc/cgo: restore .edata section checking on amd64 and 386

[gopherbot]

Change https://go.dev/cl/705755 mentions this issue: cmd/cgo: don't hardcode section name in TestNumberOfExportedFunctions