Drew DeVault • 6/5/2017

Limited "generics" in C without macros or UB

This technical article details a C programming pattern that mimics limited generics by using multiple definitions of an incomplete struct type (wlr_output_state) across different modules. It explains how this approach, used in projects like wlroots, reduces reliance on void* pointers for improved type safety and code clarity, while acknowledging its limitations and eventual rollback due to Link Time Optimization (LTO) issues.

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#c programming #type erasure #Generic Programming