diff options
Diffstat (limited to 'src/cmd/compile/internal/noder')
| -rw-r--r-- | src/cmd/compile/internal/noder/irgen.go | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/noder/irgen.go b/src/cmd/compile/internal/noder/irgen.go index dc69e94924..bf471e08fa 100644 --- a/src/cmd/compile/internal/noder/irgen.go +++ b/src/cmd/compile/internal/noder/irgen.go @@ -6,6 +6,7 @@ package noder import ( "fmt" + "regexp" "sort" "cmd/compile/internal/base" @@ -18,6 +19,8 @@ import ( "cmd/internal/src" ) +var versionErrorRx = regexp.MustCompile(`requires go[0-9]+\.[0-9]+ or later`) + // checkFiles configures and runs the types2 checker on the given // parsed source files and then returns the result. func checkFiles(noders []*noder) (posMap, *types2.Package, *types2.Info) { @@ -46,7 +49,12 @@ func checkFiles(noders []*noder) (posMap, *types2.Package, *types2.Info) { CompilerErrorMessages: true, // use error strings matching existing compiler errors Error: func(err error) { terr := err.(types2.Error) - base.ErrorfAt(m.makeXPos(terr.Pos), "%s", terr.Msg) + msg := terr.Msg + // if we have a version error, hint at the -lang setting + if versionErrorRx.MatchString(msg) { + msg = fmt.Sprintf("%s (-lang was set to %s; check go.mod)", msg, base.Flag.Lang) + } + base.ErrorfAt(m.makeXPos(terr.Pos), "%s", msg) }, Importer: &importer, Sizes: &gcSizes{}, |