cmd/go: add -cover flag to report by go version -m

Fixes #67366

Change-Id: Ie39a8ebe7fe2faf59a5f723c69d6d5c8e1a9cd8b
GitHub-Last-Rev: 021134582d8c20b5799514f34b27d8b603a52fef
GitHub-Pull-Request: golang/go#67572
Reviewed-on: https://go-review.googlesource.com/c/go/+/587375
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>

diff --git a/src/cmd/go/internal/load/pkg.go b/src/cmd/go/internal/load/pkg.go
index 92b1ea8d679c306b5d1b64ec8ee74d849d6ecfa8..b5346b1be77b4f5c36c9ce01d4c3b43525678f9e 100644 (file)
--- a/src/cmd/go/internal/load/pkg.go
+++ b/src/cmd/go/internal/load/pkg.go
@@ -2349,6 +2349,9 @@ func (p *Package) setBuildInfo(ctx context.Context, autoVCS bool) {
                        appendSetting("-ldflags", ldflags)
                }
        }
+       if cfg.BuildCover {
+               appendSetting("-cover", "true")
+       }
        if cfg.BuildMSan {
                appendSetting("-msan", "true")
        }