disable go1.11 in travis and make some small fixes for go1.11

.travis.yml

@@ -3,7 +3,7 @@ language: go
 go:
   - 1.9.x
   - 1.10.x
-  - 1.11beta2
+  # - 1.11beta2 - https://github.com/golang/go/issues/26671
 script: make check_generated test
 
 after_success:
@@ -22,4 +22,5 @@ deploy:
     tags: true
     # it's important to build on the newest version of go:
     #  - go1.11 type checking properly supports _wasm.go file, without that golangci-lint won't compile program with go 1.11 env
-    condition: $TRAVIS_GO_VERSION =~ ^1\.11
+    #    but currently go1.11 has bugs, so we build on go1.10
+    condition: $TRAVIS_GO_VERSION =~ ^1\.10\.

pkg/lint/astcache/astcache.go

@@ -77,17 +77,21 @@ func LoadFromProgram(prog *loader.Program, log logutils.Log) (*Cache, error) {
 				continue
 			}
 
-			relPath, err := filepath.Rel(root, pos.Filename)
-			if err != nil {
-				c.log.Warnf("Can't get relative path for %s and %s: %s",
-					root, pos.Filename, err)
-				continue
+			path := pos.Filename
+			if filepath.IsAbs(path) {
+				relPath, err := filepath.Rel(root, pos.Filename)
+				if err != nil {
+					c.log.Warnf("Can't get relative path for %s and %s: %s",
+						root, pos.Filename, err)
+					continue
+				}
+				path = relPath
 			}
 
-			c.m[relPath] = &File{
+			c.m[path] = &File{
 				F:    f,
 				Fset: prog.Fset,
-				Name: relPath,
+				Name: path,
 			}
 		}
 	}

pkg/result/processors/autogenerated_exclude.go

@@ -117,8 +117,11 @@ func getDoc(f *ast.File, fset *token.FileSet, filePath string) string {
 		filePos := fset.Position(pos)
 		text := g.Text()
 
-		// files using cgo have implicitly added comment "Created by cgo - DO NOT EDIT"
-		isAllowed := pos < importPos && filePos.Column == 1 && !strings.Contains(text, "Created by cgo")
+		// files using cgo have implicitly added comment "Created by cgo - DO NOT EDIT" for go <= 1.10
+		// and "Code generated by cmd/cgo" for go >= 1.11
+		isCgoGenerated := strings.Contains(text, "Created by cgo") || strings.Contains(text, "Code generated by cmd/cgo")
+
+		isAllowed := pos < importPos && filePos.Column == 1 && !isCgoGenerated
 		if isAllowed {
 			autogenDebugf("file %q: pos=%d, filePos=%s: comment %q: it's allowed", filePath, pos, filePos, text)
 			neededComments = append(neededComments, text)

test/testdata/notcompiles/typecheck.go

@@ -1,5 +1,5 @@
 // args: -Etypecheck
 package testdata
 
-fun NotCompiles() { // ERROR "expected declaration, found 'IDENT' fun"
+fun NotCompiles() { // ERROR "expected declaration, found.* fun"
 }