Add Base64 parity APIs with Base64Url #123151

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Merged

stephentoub merged 25 commits into main from copilot/add-base64-url-parity

Jan 20, 2026

Merged

Add Base64 parity APIs with Base64Url #123151

Fix review comments: add [Fact], set bytesWritten=0 on failure, simpl…

Azure Pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug) failed Jan 16, 2026 in 40m 57s

Build Libraries Test Run release coreclr windows x64 Debug failed

8 errors / 0 warnings

Annotations

Check failure on line 44 in .packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets

azure-pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug)

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets#L44

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets(44,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Test System.Tests.ConvertTests.TryFromBase64Chars has failed. Check the Test tab or this console log: https://helix.dot.net/api/2019-06-17/jobs/98d92f27-f3c2-4e21-82e5-7b1f42ac28b7/workitems/System.Runtime.Extensions.Tests/console

Check failure on line 44 in .packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets

azure-pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug)

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets#L44

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets(44,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Test System.Tests.ConvertTests.TryFromBase64String has failed. Check the Test tab or this console log: https://helix.dot.net/api/2019-06-17/jobs/98d92f27-f3c2-4e21-82e5-7b1f42ac28b7/workitems/System.Runtime.Extensions.Tests/console

Check failure on line 44 in .packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets

azure-pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug)

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets#L44

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets(44,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Test System.Tests.ConvertTests.TryFromBase64Chars has failed. Check the Test tab or this console log: https://helix.dot.net/api/2019-06-17/jobs/bdf232b1-cf34-49d8-937e-940463cba21e/workitems/System.Runtime.Extensions.Tests/console

Check failure on line 44 in .packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets

azure-pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug)

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets#L44

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets(44,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Test System.Tests.ConvertTests.TryFromBase64String has failed. Check the Test tab or this console log: https://helix.dot.net/api/2019-06-17/jobs/bdf232b1-cf34-49d8-937e-940463cba21e/workitems/System.Runtime.Extensions.Tests/console

Check failure on line 44 in .packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets

azure-pipelines / runtime (Build Libraries Test Run release coreclr windows x64 Debug)

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets#L44

.packages\microsoft.dotnet.helix.sdk\11.0.0-beta.26064.120\tools\azure-pipelines\AzurePipelines.MultiQueue.targets(44,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Test System.Tests.ConvertTests.TryFromBase64Chars has failed. Check the Test tab or this console log: https://helix.dot.net/api/2019-06-17/jobs/9ef6055a-727a-45c4-9200-ee53a4f48ab5/workitems/System.Runtime.Extensions.Tests/console

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