From 466f22e92645e41b9a00fc080cbc55a123164fb1 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Sun, 1 Nov 2026 17:25:56 +0000
Subject: [PATCH] Add CompatibilitySuppressions.xml for the Polyfill 11.4.5
 shim drift [patch]

Polyfill 11.4.5 changed the nullable and compiler-generated attributes on its
embedded ExperimentalAttribute and DefaultInterpolatedStringHandler shims, so
package validation reported CP0014/CP0015 between the net8.0, net9.0 and net10.0
assets and every pack on main has failed since 2026-10-13. The diagnostics are
on Polyfill's internal shims, not on DelegateTransform's API.

Generated with `dotnet pack -c Release -p:ApiCompatGenerateSuppressionFile=true`
on SDK 10.0.403. The 11 entries match the 11 diagnostics in the failing CI run
41251357978.

Fixes #90

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017vfJW4kJTwmbNJbKX5P18J
---
 .../CompatibilitySuppressions.xml             | 70 +++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 DelegateTransform/CompatibilitySuppressions.xml

diff --git a/DelegateTransform/CompatibilitySuppressions.xml b/DelegateTransform/CompatibilitySuppressions.xml
new file mode 100644
index 0000000..77b6a7c
--- /dev/null
+++ b/DelegateTransform/CompatibilitySuppressions.xml
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- https://learn.microsoft.com/dotnet/fundamentals/package-validation/diagnostic-ids -->
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Diagnostics.CodeAnalysis.ExperimentalAttribute.get_UrlFormat:[T:System.Runtime.CompilerServices.CompilerGeneratedAttribute]</Target>
+    <Left>lib/net8.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net9.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Diagnostics.CodeAnalysis.ExperimentalAttribute.set_UrlFormat(System.String):[T:System.Runtime.CompilerServices.CompilerGeneratedAttribute]</Target>
+    <Left>lib/net8.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net9.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Diagnostics.CodeAnalysis.ExperimentalAttribute.get_UrlFormat:[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Diagnostics.CodeAnalysis.ExperimentalAttribute.set_UrlFormat(System.String):[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Runtime.CompilerServices.DefaultInterpolatedStringHandler.#ctor(System.Int32,System.Int32,System.IFormatProvider,System.Span{System.Char}):[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Runtime.CompilerServices.DefaultInterpolatedStringHandler.AppendFormatted(System.ReadOnlySpan{System.Char},System.Int32,System.String):[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>M:System.Runtime.CompilerServices.DefaultInterpolatedStringHandler.AppendFormatted(System.ReadOnlySpan{System.Char}):[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>P:System.Diagnostics.CodeAnalysis.ExperimentalAttribute.UrlFormat:[T:System.Runtime.CompilerServices.NullableAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>T:System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:[T:System.Runtime.CompilerServices.NullableAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0014</DiagnosticId>
+    <Target>T:System.Runtime.CompilerServices.DefaultInterpolatedStringHandler:[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0015</DiagnosticId>
+    <Target>T:System.Diagnostics.CodeAnalysis.ExperimentalAttribute:[T:System.Runtime.CompilerServices.NullableContextAttribute]</Target>
+    <Left>lib/net9.0/ktsu.DelegateTransform.dll</Left>
+    <Right>lib/net10.0/ktsu.DelegateTransform.dll</Right>
+  </Suppression>
+</Suppressions>
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