From 3585bd0ea3e7a32f8dc3e634b4358d822d9ee018 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 5 Nov 2018 11:47:59 +0200
Subject: Distinguish between MSVC command line errors and warnings

---
 build2/cc/compile-rule.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'build2/cc/compile-rule.cxx')

diff --git a/build2/cc/compile-rule.cxx b/build2/cc/compile-rule.cxx
index 437255e..0ce593e 100644
--- a/build2/cc/compile-rule.cxx
+++ b/build2/cc/compile-rule.cxx
@@ -2585,7 +2585,10 @@ namespace build2
                       //
                       if (l != src.path ().leaf ().string ())
                       {
-                        if (msvc_sense_diag (l, 'D') != string::npos)
+                        // D8XXX are errors while D9XXX are warnings.
+                        //
+                        size_t p (msvc_sense_diag (l, 'D'));
+                        if (p != string::npos && l[p] == '9')
                           continue;
 
                         text << l;
-- 
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