From 6a57b7578c04482a2a3586654e20ba588dc320f2 Mon Sep 17 00:00:00 2001
From: Rolf Bjarne Kvinge <rolf@xamarin.com>
Date: Fri, 2 Sep 2022 18:57:41 +0200
Subject: [PATCH] [Runtime] Fix comparing a pointer to a UTF8 string with a
 managed string with embedded nulls.

A managed string can contain embedded nulls, while a native UTF8 string won't,
which means that we can't depend on finding a different character between the
two strings to determine whether we've reached the end of the native UTF8
string or not.
---
 src/ObjCRuntime/Runtime.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ObjCRuntime/Runtime.cs b/src/ObjCRuntime/Runtime.cs
index 7fd1d573a5e7..bd8ab8f90795 100644
--- a/src/ObjCRuntime/Runtime.cs
+++ b/src/ObjCRuntime/Runtime.cs
@@ -1946,6 +1946,8 @@ internal static bool StringEquals (IntPtr utf8, string? str)
 					}
 					if (b != (short) str [i])
 						return false;
+					if (b == 0)
+						return false;
 				}
 				return c [str.Length] == 0;
 			}