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The typed-pointer (Julia <= 1.11) integer-parameter narrowing only handled a leaf that dereferences the integer; a parameter forwarded on to a further call (e.g. report_exception_name -> report_exception) was skipped, so the fixed point never relayed through it and the deduced-name read stayed a generic-space load that the LLVM-16 Metal bitcode downgrade miscompiles. Recognize a forwarded integer as a pointer image too, and gate the whole Case B on supports_typed_pointers() so it drops out at the 1.12 floor. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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The typed-pointer (Julia <= 1.11) integer-parameter narrowing only handled a leaf that dereferences the integer; a parameter forwarded on to a further call (e.g. report_exception_name -> report_exception) was skipped, so the fixed point never relayed through it and the deduced-name read stayed a generic-space load that the LLVM-16 Metal bitcode downgrade miscompiles. Recognize a forwarded integer as a pointer image too, and gate the whole Case B on supports_typed_pointers() so it drops out at the 1.12 floor.
Continues #819 and #816.