run.bat: do not unset GOROOT_FINAL before running tests

This removes the same logic from run.bat that was removed from
cmd/dist in CL 236819.

The duplicated logic was removed from run.bash and run.rc in CL 6531,
but that part of run.bat was apparently missed (and not noticed
because its effect was redundant).

Also fix a path-separator bug in cmd/addr2line.TestAddr2Line that was
exposed as a result.

Fixes #39478
Updates #39385

Change-Id: I00054966cf92ef92a03681bf23de7f45f46fbb5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/237359
Run-TryBot: Bryan C. Mills <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>

Author: Bryan C. Mills

src/cmd/addr2line/addr2line_test.go

@@ -73,6 +73,8 @@ func testAddr2Line(t *testing.T, exepath, addr string) {
 	if err != nil {
 		t.Fatalf("Stat failed: %v", err)
 	}
+	// Debug paths are stored slash-separated, so convert to system-native.
+	srcPath = filepath.FromSlash(srcPath)
 	fi2, err := os.Stat(srcPath)
 	if gorootFinal := os.Getenv("GOROOT_FINAL"); gorootFinal != "" && strings.HasPrefix(srcPath, gorootFinal) {
 		if os.IsNotExist(err) || (err == nil && !os.SameFile(fi1, fi2)) {
@@ -88,12 +90,12 @@ func testAddr2Line(t *testing.T, exepath, addr string) {
 	if !os.SameFile(fi1, fi2) {
 		t.Fatalf("addr2line_test.go and %s are not same file", srcPath)
 	}
-	if srcLineNo != "97" {
-		t.Fatalf("line number = %v; want 97", srcLineNo)
+	if srcLineNo != "99" {
+		t.Fatalf("line number = %v; want 99", srcLineNo)
 	}
 }
 
-// This is line 96. The test depends on that.
+// This is line 98. The test depends on that.
 func TestAddr2Line(t *testing.T) {
 	testenv.MustHaveGoBuild(t)
 

src/run.bat

@@ -35,11 +35,6 @@ if errorlevel 1 goto fail
 echo.
 :norebuild
 
-:: we must unset GOROOT_FINAL before tests, because runtime/debug requires
-:: correct access to source code, so if we have GOROOT_FINAL in effect,
-:: at least runtime/debug test will fail.
-set GOROOT_FINAL=
-
 :: get CGO_ENABLED
 ..\bin\go env > env.bat
 if errorlevel 1 goto fail