f

bindings/rust/evmc-vm/src/lib.rs

@@ -170,51 +170,6 @@ extern "C" fn release_stack_result(result: *const ffi::evmc_result) {
     }
 }
 
-/// Returns a pointer to a stack-allocated evmc_result.
-impl Into<ffi::evmc_result> for ExecutionResult {
-    fn into(self) -> ffi::evmc_result {
-        let (buffer, len) = if let Some(buf) = self.output {
-            let buf_len = buf.len();
-
-            // Manually allocate heap memory for the new home of the output buffer.
-            let memlayout = std::alloc::Layout::from_size_align(buf_len, 1).expect("Bad layout");
-            let new_buf = unsafe { std::alloc::alloc(memlayout) };
-            unsafe {
-                // Copy the data into the allocated buffer.
-                std::ptr::copy(buf.as_ptr(), new_buf, buf_len);
-            }
-
-            (new_buf as *const u8, buf_len)
-        } else {
-            (std::ptr::null(), 0)
-        };
-
-        ffi::evmc_result {
-            status_code: self.status_code,
-            gas_left: self.gas_left,
-            output_data: buffer,
-            output_size: len,
-            //release: None,
-            // This still crashes.
-            release: Some(release_stack_result),
-            create_address: self.create_address,
-            padding: [0u8; 4],
-        }
-    }
-}
-
-/// Callback to pass across FFI, de-allocating the struct.
-extern "C" fn release_stack_result(result: *const ffi::evmc_result) {
-    unsafe {
-        let tmp = *result;
-        if !tmp.output_data.is_null() {
-            let buf_layout =
-                std::alloc::Layout::from_size_align(tmp.output_size, 1).expect("Bad layout");
-            std::alloc::dealloc(tmp.output_data as *mut u8, buf_layout);
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;