From 013167d58467c587a08018987a9aa30ea5a64a8a Mon Sep 17 00:00:00 2001
From: actboy168 <actboy168@gmail.com>
Date: Fri, 28 Jun 2024 09:17:06 +0800
Subject: [PATCH] assert

---
 scripts/env/msvc.lua | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scripts/env/msvc.lua b/scripts/env/msvc.lua
index 228e965..0e75f6c 100644
--- a/scripts/env/msvc.lua
+++ b/scripts/env/msvc.lua
@@ -115,8 +115,10 @@ end
 
 local function find_toolset()
     local verfile = installpath().."/VC/Auxiliary/Build/Microsoft.VCToolsVersion.default.txt"
-    local r = readall(verfile)
-    return strtrim(r)
+    local raw = readall(verfile)
+    local res = strtrim(raw)
+    assert(res, ("`%s` parse failed."):format(raw))
+    return res
 end
 
 local function vsdevcmd(arch, winsdk, toolset, f)