01e83adc88
but a C-variadic method makes a trait dyn-incompatible. That is because methods from dyn traits, when cast to a function pointer, create a shim. That shim can't really forward the c-variadic arguments.
10 lines
241 B
Rust
10 lines
241 B
Rust
#![crate_type = "lib"]
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pub unsafe extern "C" fn test(_: i32, ap: ...) {}
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//~^ ERROR C-variadic functions are unstable
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trait Trait {
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unsafe extern "C" fn trait_test(_: i32, ap: ...) {}
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//~^ ERROR C-variadic functions are unstable
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}
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