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Graphify Fortran extractor: incomplete cpp #include hardening allows arbitrary host-file read/exfiltration when indexing an untrusted repo
## Summary The Fortran extractor's C-preprocessor step (`graphify/extractors/fortran.py`, `_cpp_preprocess`) applies an incomplete `#include` hardening. The `-nostdinc -I /dev/null` flags it relies on (comment "Security (F-007)") do **not** stop a capital-`F`…