From f1f4d62f0b8112ca26934fe5f394932ed602cb0b Mon Sep 17 00:00:00 2001
From: Thomas Kupper <thomas.kupper@gmail.com>
Date: Sun, 9 Feb 2020 11:18:24 +0000
Subject: [PATCH] Handle case of invalid trace command line option

- This fix came to light through issue #40 'remake -xn isn't the same
   as remake -nx'
- Added a check for invalid tracing option (-x|--trace)
---
 main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/main.c b/main.c
index ee7f20abf..19edb322d 100644
--- a/main.c
+++ b/main.c
@@ -579,6 +579,8 @@ decode_trace_flags (stringlist_t *ppsz_tracing_opts)
           db_level = DB_BASIC | DB_TRACE;
         else if (0 == strcmp(*p, "read"))
           db_level |= DB_READ_MAKEFILES;
+        else
+          OS ( fatal, NILF, _("unknown trace command execution type `%s'"), *p);
       }
   }
 }