From bd4139713dac599896ae86822707aae7d189993a Mon Sep 17 00:00:00 2001
From: SalvadorC <salvadorcavadini+github@gmail.com>
Date: Fri, 21 Sep 2018 19:51:01 +0200
Subject: [PATCH] fix issue [#59] (#70)

---
 lint/package.go | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/lint/package.go b/lint/package.go
index 4dbaa03..7b6046f 100644
--- a/lint/package.go
+++ b/lint/package.go
@@ -77,7 +77,9 @@ func (p *Package) TypeCheck() error {
 		anyFile = f
 		astFiles = append(astFiles, f.AST)
 	}
-	typesPkg, err := config.Check(anyFile.AST.Name.Name, p.fset, astFiles, info)
+
+	typesPkg, err := check(config, anyFile.AST.Name.Name, p.fset, astFiles, info)
+
 	// Remember the typechecking info, even if config.Check failed,
 	// since we will get partial information.
 	p.TypesPkg = typesPkg
@@ -86,6 +88,20 @@ func (p *Package) TypeCheck() error {
 	return err
 }
 
+// check function encapsulates the call to go/types.Config.Check method and
+// recovers if the called method panics (see issue #59)
+func check(config *types.Config, n string, fset *token.FileSet, astFiles []*ast.File, info *types.Info) (p *types.Package, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err, _ = r.(error)
+			p = nil
+			return
+		}
+	}()
+
+	return config.Check(n, fset, astFiles, info)
+}
+
 // TypeOf returns the type of an expression.
 func (p *Package) TypeOf(expr ast.Expr) types.Type {
 	if p.TypesInfo == nil {