aef8a2c483
Fixes #177501 This PR fixes a compilation crash when using character types in OpenMP REDUCTION clauses with declare_reduction directives. The problem was that character types weren't being handled properly during OpenMP lowering. Specifically: - Missing character length parameters in hlfir.declare operations - Incorrect type wrapping for by-ref reductions - Missing special case handling for boxed/unboxed character types The fix ensures character types are treated similarly to derived types throughout the reduction pipeline, since fir::isa_trivial() excludes them. Added a regression test to verify the fix works for both allocatable and non-allocatable character reductions. <img width="654" height="47" alt="image" src="https://github.com/user-attachments/assets/cc962f01-3432-44ce-befb-324644767c8b" />
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