ILVerify Baseline

When to Use

IL shape changed (codegen, new types, method signatures) and ILVerify CI job fails.

Offset-Only Differences

Changes that only shift IL byte offsets ([offset 0x...]) — for example adding code above an existing error site — are detected automatically and do not fail CI. A warning is printed suggesting a baseline update. No action is required, but refreshing baselines keeps them accurate.

Update Baselines

TEST_UPDATE_BSL=1 pwsh tests/ILVerify/ilverify.ps1

Or use the /run ilverify PR comment command to update baselines via CI.

Baselines Location

tests/ILVerify/*.bsl

Verify

Re-run without TEST_UPDATE_BSL=1, should pass.