llvm-project

fde0ea05 - [flang][AddAliasTags] Fix segfault when type contains `fir.boxproc` (#198997)

[flang][AddAliasTags] Fix segfault when type contains `fir.boxproc` (#198997) `fir.boxproc` currently has no LLVM representation (its converter returns `std::nullopt`). When `AddAliasTags` called `getTypeSizeAndAlignment` on a type containing `fir.boxproc` (e.g. a sequence of a derived type with procedure pointer components), `convertRecordType` and `convertSequenceType` would crash trying to mlir::cast a null type. For any type that might recursively contain a non-convertible type (`fir.boxproc` in this case), `TypeConverter` would now propagate an empty optional `mlir::Type` and emit a debug warning that conversion failed. This helps us avoid seg faulting expecting that the type or some part of it were converted correctly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>