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c-api: Fix wasmtime_func_call_unchecked to communicate all errors (#5262)

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Change the return value of this function to a `wasmtime_error_t*`
instead of the prior `wasm_trap_t*`. This is a leftover from #5149.

Closes #5257
This commit is contained in:
Alex Crichton
2022-11-14 12:30:17 -06:00
committed by GitHub
parent ff46bbaebf
commit 9c73a448f5
2 changed files with 17 additions and 13 deletions
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5
crates/c-api/include/wasmtime/func.h
View File

@@ -241,10 +241,11 @@ WASM_API_EXTERN wasmtime_error_t *wasmtime_func_call(
* faster than that function, but the tradeoff is that embeddings must uphold
* more invariants rather than relying on Wasmtime to check them for you.
*/
WASM_API_EXTERN wasm_trap_t *wasmtime_func_call_unchecked(
WASM_API_EXTERN wasmtime_error_t *wasmtime_func_call_unchecked(
wasmtime_context_t *store,
const wasmtime_func_t *func,
wasmtime_val_raw_t *args_and_results
wasmtime_val_raw_t *args_and_results,
wasm_trap_t **trap
);
/**

25
crates/c-api/src/func.rs
View File

@@ -351,14 +351,7 @@ pub unsafe extern "C" fn wasmtime_func_call(
store.data_mut().wasm_val_storage = params;
None
}
Ok(Err(trap)) => {
if trap.is::<Trap>() {
*trap_ret = Box::into_raw(Box::new(wasm_trap_t::new(trap)));
None
} else {
Some(Box::new(wasmtime_error_t::from(trap)))
}
}
Ok(Err(trap)) => store_err(trap, trap_ret),
Err(panic) => {
let err = error_from_panic(panic);
*trap_ret = Box::into_raw(Box::new(wasm_trap_t::new(err)));
@@ -372,10 +365,20 @@ pub unsafe extern "C" fn wasmtime_func_call_unchecked(
store: CStoreContextMut<'_>,
func: &Func,
args_and_results: *mut ValRaw,
) -> *mut wasm_trap_t {
trap_ret: &mut *mut wasm_trap_t,
) -> Option<Box<wasmtime_error_t>> {
match func.call_unchecked(store, args_and_results) {
Ok(()) => ptr::null_mut(),
Err(trap) => Box::into_raw(Box::new(wasm_trap_t::new(trap))),
Ok(()) => None,
Err(trap) => store_err(trap, trap_ret),
}
}
fn store_err(err: Error, trap_ret: &mut *mut wasm_trap_t) -> Option<Box<wasmtime_error_t>> {
if err.is::<Trap>() {
*trap_ret = Box::into_raw(Box::new(wasm_trap_t::new(err)));
None
} else {
Some(Box::new(wasmtime_error_t::from(err)))
}
}