[release/10.0] JIT: handle commas during inline return value substitution #119271
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@dotnet/jit-contrib PTAL |
jeffschwMSFT
approved these changes
Sep 2, 2025
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@EgorBo PTAL |
EgorBo
approved these changes
Sep 3, 2025
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Build error is similar to #119249 |
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/ba-g known error #119249 |
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Backport of #119160 to release/10.0
/cc @AndyAyersMS
Customer Impact
Found via Fuzzlyn.
When we inline certain kinds of return values into a predicate context, we may fail to form proper JIT IR. Existing test does not fail in release, but the malformed IR may in other similar examples cause the JIT to crash or produce incorrect code.
Regression
Fails the same way with .NET 9; not sure about earlier.
Testing
Added the repro case as a test; no diffs elsewhere.
Risk
Low. Seems to be an uncommon pattern.