From f28befa00b82d2d154cc947b529520f77db2c5a6 Mon Sep 17 00:00:00 2001
From: Victor Nova <lost@losttech.software>
Date: Wed, 8 Sep 2021 23:46:55 -0700
Subject: [PATCH] fixed bool[].ToFixedArray()

---
 src/FixedArray.cs        | 16 ++++++++++++++--
 tests/FixedArrayTests.cs |  7 +++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/FixedArray.cs b/src/FixedArray.cs
index bfc949b..c4669dd 100644
--- a/src/FixedArray.cs
+++ b/src/FixedArray.cs
@@ -128,8 +128,20 @@ public static unsafe IList<T> ToFixedArray<T>(this ICollection<T> collection) wh
 
             int len = collection.Count;
             var type = FixedArray<T>.GetType(len);
-            object result = Activator.CreateInstance(type);
-            var box = GCHandle.Alloc(result, GCHandleType.Pinned);
+            var result = (IList<T>)Activator.CreateInstance(type);
+
+            GCHandle box;
+            try {
+                box = GCHandle.Alloc(result, GCHandleType.Pinned);
+            } catch (ArgumentException) {
+                // workaround for bool and char not being pinnable
+                using IEnumerator<T> enumerator = collection.GetEnumerator();
+                for (int i = 0; i < len; i++) {
+                    if (!enumerator.MoveNext()) throw new ArgumentException("Bad collection enumerator");
+                    result[i] = enumerator.Current;
+                }
+                return result;
+            }
             var data = (T*)box.AddrOfPinnedObject();
 
             try {
diff --git a/tests/FixedArrayTests.cs b/tests/FixedArrayTests.cs
index afb0949..2cf4032 100644
--- a/tests/FixedArrayTests.cs
+++ b/tests/FixedArrayTests.cs
@@ -47,6 +47,13 @@ public void ToFixedArray() {
             Assert.Equal(netArray, array);
         }
 
+        [Fact]
+        public void ToFixedBoolArray() {
+            bool[] netArrray = new[] { false, true, true };
+            var array = netArrray.ToFixedArray();
+            Assert.Equal(netArrray, array);
+        }
+
         [Fact]
         public void ToFixedArray_TooLarge() {
             int[] netArray = new int[PowersOfTwo.Max + 1];