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cmd/go: suppress more errors in package-to-module loading

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In CL 197059, I suppressed errors if the target package was already found.
However, that does not cover the case of passing a '/v2' module path to
'go get' when the module does not contain a package at its root.

This CL is a minimal fix for that case, intended to be backportable to 1.13.

(Longer term, I intend to rework the version-validation check to treat
all mismatched paths as ErrNotExist.)

Fixes #34746
Updates #34383

Change-Id: Ia963c2ea00fae424812b8f46a4d6c2c668252147
Reviewed-on: https://go-review.googlesource.com/c/go/+/199839
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
This commit is contained in:
Bryan C. Mills 2019-10-08 14:23:43 -04:00
parent 0b204f958e
commit 421d35cf69
2 changed files with 9 additions and 4 deletions
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8
src/cmd/go/internal/modload/query.go
View File

@ -472,10 +472,10 @@ func queryPrefixModules(candidateModules []string, queryModule func(path string)
notExistErr = rErr
}
} else if err == nil {
if len(found) > 0 {
// golang.org/issue/34094: If we have already found a module
// containing the target package, ignore errors for modules with
// shorter paths.
if len(found) > 0 || noPackage != nil {
// golang.org/issue/34094: If we have already found a module that
// could potentially contain the target package, ignore unclassified
// errors for modules with shorter paths.
// golang.org/issue/34383 is a special case of this: if we have
// already found example.com/foo/v2@v2.0.0 with a matching go.mod

5
src/cmd/go/testdata/script/mod_get_major.txt vendored
View File

@ -13,6 +13,11 @@ go get -d vcs-test.golang.org/git/v3pkg.git/v3@v3.0.0
go list -m vcs-test.golang.org/git/v3pkg.git/v3
stdout '^vcs-test.golang.org/git/v3pkg.git/v3 v3.0.0$'
go get -d vcs-test.golang.org/git/empty-v2-without-v1.git/v2@v2.0.0
go list -m vcs-test.golang.org/git/empty-v2-without-v1.git/v2
stdout '^vcs-test.golang.org/git/empty-v2-without-v1.git/v2 v2.0.0$'
-- go.mod --
module example.com
go 1.13