From 27486d1e9015096eef5b59df0e78e2d6af4cd92f Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Fri, 29 Nov 2024 22:49:03 +0800
Subject: improve comments

---
 xmake/modules/core/tools/gcc.lua | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xmake/modules/core/tools/gcc.lua b/xmake/modules/core/tools/gcc.lua
index 9e1a658a7..10ac810f3 100644
--- a/xmake/modules/core/tools/gcc.lua
+++ b/xmake/modules/core/tools/gcc.lua
@@ -810,6 +810,8 @@ function _compile_preprocessed_file(program, cppinfo, opt)
     end
     local outdata, errdata = os.iorunv(program, argv, opt)
     -- we need to get warning information from output
+    -- and we need to reserve warnings output from preprocessing
+    -- @see https://github.com/xmake-io/xmake/issues/5858
     if outdata then
         cppinfo.outdata = (cppinfo.outdata or "") .. outdata
     end
-- 
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