wasm-opt-sys 0.114.1

Native wasm-opt build
Documentation 
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#include <cstdlib> // _Exit
#include <stdexcept> // runtime_error
#include <iostream>

extern "C" int wasm_opt_main_actual(int argc, const char* argv[]);

// A wrapper for the C++ `main` function that catches exceptions.
//
// This is needed because we have asked the `Fatal` type to throw instead of
// exit, for use as a library. But for use as a `bin` we still need to handle
// those exceptions in a similar way to the "real" `wasm-opt` bin.
//
// Since the bin does not use `cxx` it doesn't get baked-in exception handling,
// so we do that here, and the bin calls this main function.
//
// This design is also influenced by the need to maintain binary compatibility
// between `wasm-opt` crate 0.110.0 and 0.110.1. We might otherwise use `cxx`
// for the exception handling.
extern "C" int wasm_opt_main(int argc, const char* argv[]) {
  try {
    return wasm_opt_main_actual(argc, argv);
  } catch (const std::exception &e) {
    std::cerr << e.what() << std::endl;
    // See comments in `Fatal` about `_Exit` and static destructors.
    _Exit(EXIT_FAILURE);
  }
}