go/types, types2: make sure info recording is executed in test runs

Issue #61486 causes a compiler crash but is not detected when running
stand-alone type-checker tests because no types are recorded.

Set up Config.Info map with all maps when when running local tests
so that type/object recording code is executed during local tests.

For #61486.

Change-Id: I8eb40c8525dac3da65db0dc7e0e654842713b9a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/511657
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

Author: griesemer

src/cmd/compile/internal/types2/check_test.go

@@ -163,7 +163,17 @@ func testFiles(t *testing.T, filenames []string, srcs [][]byte, colDelta uint, m
 		opt(&conf)
 	}
 
-	conf.Check(pkgName, files, nil)
+	// Provide Config.Info with all maps so that info recording is tested.
+	info := Info{
+		Types:      make(map[syntax.Expr]TypeAndValue),
+		Instances:  make(map[*syntax.Name]Instance),
+		Defs:       make(map[*syntax.Name]Object),
+		Uses:       make(map[*syntax.Name]Object),
+		Implicits:  make(map[syntax.Node]Object),
+		Selections: make(map[*syntax.SelectorExpr]*Selection),
+		Scopes:     make(map[syntax.Node]*Scope),
+	}
+	conf.Check(pkgName, files, &info)
 
 	if listErrors {
 		return

src/go/types/check_test.go

@@ -178,7 +178,17 @@ func testFiles(t *testing.T, filenames []string, srcs [][]byte, manual bool, opt
 		opt(&conf)
 	}
 
-	conf.Check(pkgName, fset, files, nil)
+	// Provide Config.Info with all maps so that info recording is tested.
+	info := Info{
+		Types:      make(map[ast.Expr]TypeAndValue),
+		Instances:  make(map[*ast.Ident]Instance),
+		Defs:       make(map[*ast.Ident]Object),
+		Uses:       make(map[*ast.Ident]Object),
+		Implicits:  make(map[ast.Node]Object),
+		Selections: make(map[*ast.SelectorExpr]*Selection),
+		Scopes:     make(map[ast.Node]*Scope),
+	}
+	conf.Check(pkgName, fset, files, &info)
 
 	if listErrors {
 		return