From c9e9afb835cb25dfe006c82851fc6dcb99810703 Mon Sep 17 00:00:00 2001
From: Neal Miller <nealm@genebygene.com>
Date: Fri, 23 Mar 2018 13:52:53 -0500
Subject: [PATCH 1/2] fix errors when using multiple referenced libraries

---
 src/coverlet.core/Coverage.cs        |  1 +
 src/coverlet.core/CoverageTracker.cs | 22 ++++++++++++++++------
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/coverlet.core/Coverage.cs b/src/coverlet.core/Coverage.cs
index fef3bd6..2869c67 100644
--- a/src/coverlet.core/Coverage.cs
+++ b/src/coverlet.core/Coverage.cs
@@ -93,6 +93,7 @@ namespace Coverlet.Core
         {
             foreach (var result in _results)
             {
+                if (!File.Exists(result.HitsFilePath)) { continue; }
                 var lines = File.ReadAllLines(result.HitsFilePath);
                 for (int i = 0; i < lines.Length; i++)
                 {
diff --git a/src/coverlet.core/CoverageTracker.cs b/src/coverlet.core/CoverageTracker.cs
index 0553d24..a2f1c2f 100644
--- a/src/coverlet.core/CoverageTracker.cs
+++ b/src/coverlet.core/CoverageTracker.cs
@@ -7,15 +7,21 @@ namespace Coverlet.Core
 {
     public static class CoverageTracker
     {
-        private static List<string> _markers;
-        private static string _path;
+        private static Dictionary<string, List<string>> _markers;
         private static bool _registered;
 
         [ExcludeFromCoverage]
         public static void MarkExecuted(string path, string marker)
         {
             if (_markers == null)
-                _markers = new List<string>();
+            {
+                _markers = new Dictionary<string, List<string>>();
+            }
+
+            if (!_markers.ContainsKey(path))
+            {
+                _markers.Add(path, new List<string>());
+            }
 
             if (!_registered)
             {
@@ -23,11 +29,15 @@ namespace Coverlet.Core
                 _registered = true;
             }
 
-            _markers.Add(marker);
-            _path = path;
+            _markers[path].Add(marker);
         }
 
         public static void CurrentDomain_ProcessExit(object sender, EventArgs e)
-            => File.WriteAllLines(_path, _markers);
+        {
+            foreach (var kvp in _markers)
+            {
+                File.WriteAllLines(kvp.Key, kvp.Value);
+            }
+        }
     }
 }
\ No newline at end of file

From 75a567adc94415199f016cdfca9bb3cd810f286f Mon Sep 17 00:00:00 2001
From: Neal Miller <wlmiller@gmail.com>
Date: Fri, 23 Mar 2018 20:50:31 -0500
Subject: [PATCH 2/2] remove File.Exists check in Coverage.CalculateCoverage

---
 src/coverlet.core/Coverage.cs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/coverlet.core/Coverage.cs b/src/coverlet.core/Coverage.cs
index 2869c67..fef3bd6 100644
--- a/src/coverlet.core/Coverage.cs
+++ b/src/coverlet.core/Coverage.cs
@@ -93,7 +93,6 @@ namespace Coverlet.Core
         {
             foreach (var result in _results)
             {
-                if (!File.Exists(result.HitsFilePath)) { continue; }
                 var lines = File.ReadAllLines(result.HitsFilePath);
                 for (int i = 0; i < lines.Length; i++)
                 {