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go/loader: issue informative error (not panic) if cgo used in ad hoc package

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See https://github.com/golang/go/issues/11627.

Change-Id: I458bc4ea54d0db34f3ba96060d284eda4bad7111
Reviewed-on: https://go-review.googlesource.com/12190
Reviewed-by: David Crawshaw <crawshaw@golang.org>
This commit is contained in:
Alan Donovan 2015-07-14 13:57:11 -04:00
parent ea5101579e
commit c5ca59aab8
1 changed files with 8 additions and 1 deletions
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9
go/loader/loader.go
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@ -294,7 +294,7 @@ func (conf *Config) ImportWithTests(path string) { conf.addImport(path, true) }
func (conf *Config) Import(path string) { conf.addImport(path, false) }
func (conf *Config) addImport(path string, tests bool) {
if path == "unsafe" {
if path == "C" || path == "unsafe" {
return // ignore; not a real package
}
if conf.ImportPkgs == nil {
@ -708,6 +708,13 @@ func (imp *importer) doImport(from *PackageInfo, to string) (*types.Package, err
if to == "unsafe" {
return types.Unsafe, nil
}
if to == "C" {
// This should be unreachable, but ad hoc packages are
// not currently subject to cgo preprocessing.
// See https://github.com/golang/go/issues/11627.
return nil, fmt.Errorf(`the loader doesn't cgo-process ad hoc packages like %q; see Go issue 11627`,
from.Pkg.Path())
}
imp.importedMu.Lock()
ii := imp.imported[to]