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cmd/go: verify lazy-loading invariants when loading the vendor list for a lazy module

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For #36460

Change-Id: Ib4b1baea35826c3e359456f8dba09a49283e7fee
Reviewed-on: https://go-review.googlesource.com/c/go/+/315069
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
This commit is contained in:
Bryan C. Mills 2021-04-29 10:27:43 -04:00
parent 9a81702b97
commit 8d8abb3b8a
1 changed files with 13 additions and 4 deletions
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17
src/cmd/go/internal/modload/buildlist.go
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@ -140,12 +140,21 @@ func (rs *Requirements) initVendor(vendorList []module.Version) {
// The roots of a lazy module should already include every module in the
// vendor list, because the vendored modules are the same as those
// maintained as roots by the lazy loading “import invariant”.
if go117LazyTODO {
// Double-check here that that invariant holds.
//
// Just to be sure, we'll double-check that here.
inconsistent := false
for _, m := range vendorList {
if v, ok := rs.rootSelected(m.Path); !ok || v != m.Version {
base.Errorf("go: vendored module %v should be required explicitly in go.mod", m)
inconsistent = true
}
}
if inconsistent {
base.Fatalf("go: %v", errGoModDirty)
}
// So we can just treat the rest of the module graph as effectively
// “pruned out”, like a more aggressive version of lazy loading:
// Now we can treat the rest of the module graph as effectively “pruned
// out”, like a more aggressive version of lazy loading: in vendor mode,
// the root requirements *are* the complete module graph.
mg.g.Require(Target, rs.rootModules)
} else {