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cmd/go/internal/imports: use the full path to resolve symlinks

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info.Name returns a name relative to the directory, so we need to
prefix that directory in the Stat call.

(This was missed in CL 141097 due to the fact that the test only
happened to check symlinks in the current directory.)

This allows the misc/ tests to work in module mode on platforms that
support symlinks.

Updates #30228
Updates #28107

Change-Id: Ie31836382df0cbd7d203b7a8b637c4743d68b6f3
Reviewed-on: https://go-review.googlesource.com/c/163517
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 2019-02-21 12:00:12 -05:00
parent 8f1e2d4ef7
commit 3726d91d68
2 changed files with 27 additions and 8 deletions
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2
src/cmd/go/internal/imports/scan.go
View File

@ -26,7 +26,7 @@ func ScanDir(dir string, tags map[string]bool) ([]string, []string, error) {
// If the directory entry is a symlink, stat it to obtain the info for the
// link target instead of the link itself.
if info.Mode()&os.ModeSymlink != 0 {
info, err = os.Stat(name)
info, err = os.Stat(filepath.Join(dir, name))
if err != nil {
continue // Ignore broken symlinks.
}

33
src/cmd/go/testdata/script/mod_symlink.txt vendored
View File

@ -2,16 +2,31 @@ env GO111MODULE=on
[!symlink] skip
# 'go list' should resolve modules of imported packages.
go list -deps -f '{{.Module}}'
go list -deps -f '{{.Module}}' .
stdout golang.org/x/text
# They should continue to resolve if the importing file is a symlink.
mkdir links
cd links
symlink go.mod -> ../go.mod
symlink issue.go -> ../issue.go
go list -deps -f '{{.Module}}' ./subpkg
stdout golang.org/x/text
go list -deps -f '{{.Module}}'
# Create a copy of the module using symlinks in src/links.
mkdir links
symlink links/go.mod -> $GOPATH/src/go.mod
symlink links/issue.go -> $GOPATH/src/issue.go
mkdir links/subpkg
symlink links/subpkg/issue.go -> $GOPATH/src/subpkg/issue.go
# We should see the copy as a valid module root.
cd links
go env GOMOD
stdout links[/\\]go.mod
go list -m
stdout golang.org/issue/28107
# The symlink-based copy should contain the same packages
# and have the same dependencies as the original.
go list -deps -f '{{.Module}}' .
stdout golang.org/x/text
go list -deps -f '{{.Module}}' ./subpkg
stdout golang.org/x/text
-- go.mod --
@ -21,3 +36,7 @@ module golang.org/issue/28107
package issue
import _ "golang.org/x/text/language"
-- subpkg/issue.go --
package issue
import _ "golang.org/x/text/language"