From 49681100b76ebd5fbf06b01a7f2b97e8502f5032 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 27 Mar 2026 18:25:08 +0000
Subject: [PATCH] Disable AssertFailureRegressionTest on 32-bit platforms
 (workaround for #126212)

Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/f49be4b4-cc0d-4da8-bdf2-d34e4aba7a24

Co-authored-by: jkotas <6668460+jkotas@users.noreply.github.com>
---
 src/libraries/System.Runtime.Numerics/tests/BigInteger/modpow.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libraries/System.Runtime.Numerics/tests/BigInteger/modpow.cs b/src/libraries/System.Runtime.Numerics/tests/BigInteger/modpow.cs
index 5f840a9a520990..ef7859a6b07047 100644
--- a/src/libraries/System.Runtime.Numerics/tests/BigInteger/modpow.cs
+++ b/src/libraries/System.Runtime.Numerics/tests/BigInteger/modpow.cs
@@ -369,6 +369,7 @@ private static string Print(byte[] bytes)
 
         [Theory]
         [MemberData(nameof(AssertFailureRegressionTest_InputData))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/126212", typeof(PlatformDetection), nameof(PlatformDetection.Is32BitProcess))]
         public static void FastReducer_AssertFailure_RegressionTest(BigInteger value, int exponent, BigInteger modulus)
         {
             // Regression test exercising the code path that was resulting in