From 50fd53f7b09434ce1af1c4cbc1dc8414f54d922a Mon Sep 17 00:00:00 2001
From: James Crosswell <jamescrosswell@users.noreply.github.com>
Date: Thu, 1 May 2025 17:33:19 +1200
Subject: [PATCH 1/3] fix: MSB4185: The function "IsWindows" on type
 "System.OperatingSystem" is not available

Resolves #4141:
- https://github.com/getsentry/sentry-dotnet/issues/4141

When building .NET Framework applications, only whitelisted `System.*` property function invocations (e.g., `System.OperatingSystem.IsWindows()` are allowed).

This PR avoid using an unlisted functions in the transitive build targets.
---
 src/Sentry/buildTransitive/Sentry.targets | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Sentry/buildTransitive/Sentry.targets b/src/Sentry/buildTransitive/Sentry.targets
index 01ac89fb2a..6169666d28 100644
--- a/src/Sentry/buildTransitive/Sentry.targets
+++ b/src/Sentry/buildTransitive/Sentry.targets
@@ -15,7 +15,7 @@
     <Error Text="Android projects using Sentry cannot build using AndroidEnableAssemblyCompression = false due to a Microsoft issue.  Please follow https://github.com/dotnet/android/issues/9752" />
   </Target>
 
-  <ItemGroup Condition="$([System.OperatingSystem]::IsWindows())">
+  <ItemGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
     <!-- See: https://github.com/getsentry/sentry-dotnet/pull/4111 -->
     <LinkerArg Include="/NODEFAULTLIB:MSVCRT" />
   </ItemGroup>

From 4ef4b05f367e574d8e12d3d63844dce2f312a29f Mon Sep 17 00:00:00 2001
From: James Crosswell <jamescrosswell@users.noreply.github.com>
Date: Thu, 1 May 2025 17:37:07 +1200
Subject: [PATCH 2/3] Update CHANGELOG.md

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22b7ee7380..61a4c5115d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 ### Fixes
 
 - Work around iOS SHA1 bug ([#4143](https://github.com/getsentry/sentry-dotnet/pull/4143))
+- Fixes build error when building .NET Framwork applications using Sentry 5.6.0: `MSB4185 :The function "IsWindows" on type "System.OperatingSystem" is not available` ([#4160](https://github.com/getsentry/sentry-dotnet/pull/4160))
 
 ### Dependencies
 

From a0c01e00421c035897685fc24f91e543c298ba62 Mon Sep 17 00:00:00 2001
From: Allan Ritchie <allan.ritchie@gmail.com>
Date: Thu, 1 May 2025 09:07:17 -0400
Subject: [PATCH 3/3] Update CHANGELOG.md

Co-authored-by: Martin Costello <martin@martincostello.com>
---
 CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 61a4c5115d..cf37dc9d80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@
 ### Fixes
 
 - Work around iOS SHA1 bug ([#4143](https://github.com/getsentry/sentry-dotnet/pull/4143))
-- Fixes build error when building .NET Framwork applications using Sentry 5.6.0: `MSB4185 :The function "IsWindows" on type "System.OperatingSystem" is not available` ([#4160](https://github.com/getsentry/sentry-dotnet/pull/4160))
+- Fixes build error when building .NET Framework applications using Sentry 5.6.0: `MSB4185 :The function "IsWindows" on type "System.OperatingSystem" is not available` ([#4160](https://github.com/getsentry/sentry-dotnet/pull/4160))
 
 ### Dependencies