Calling Convention

Definitions

1. The low-level contract that defines how function calls pass arguments, return values, and preserve registers at the machine-code level. Calling conventions are crucial in compiler output, FFI boundaries, and debugging because mismatches can cause subtle crashes or corrupted state.

   In plain English: The low-level rule set for how functions call each other in compiled code.

   Example: "The native extension kept crashing because the wrapper assumed the wrong calling convention for the vendor's C API on Windows."

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