From 4cea89713c0fb3f5ff8ac1244cecd795509986c5 Mon Sep 17 00:00:00 2001
From: Rebecca Stambler <rstambler@golang.org>
Date: Wed, 15 Jul 2020 13:13:59 -0400
Subject: [PATCH] internal/lsp: handle nil pointer in PackageStats

Fixes golang/go#40224

Change-Id: I9f3f194b1c115ff0242cbce89a36e20d9e21a41f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/242797
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
---
 internal/lsp/cache/cache.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/lsp/cache/cache.go b/internal/lsp/cache/cache.go
index c9fa616848..be6cd91695 100644
--- a/internal/lsp/cache/cache.go
+++ b/internal/lsp/cache/cache.go
@@ -236,6 +236,9 @@ func (c *Cache) PackageStats(withNames bool) template.HTML {
 }
 
 func astCost(f *ast.File) int64 {
+	if f == nil {
+		return 0
+	}
 	var count int64
 	ast.Inspect(f, func(n ast.Node) bool {
 		count += 32 // nodes are pretty small.