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Fix memory api to be sound

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This commit is contained in:
Lachlan Sneff
2019-01-28 10:59:05 -08:00
parent a58f3318f0
commit 9b491ec95d
7 changed files with 251 additions and 32 deletions
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7
lib/runtime-core/src/backing.rs
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@ -104,11 +104,8 @@ impl LocalBacking {
let data_top = init_base + init.data.len();
assert!(memory_desc.min as usize * WASM_PAGE_SIZE >= data_top);
let mem: &mut Memory = &mut memories[local_memory_index];
let mem_init_view =
&mut mem.as_slice_mut()[init_base..init_base + init.data.len()];
mem_init_view.copy_from_slice(&init.data);
let mem = &memories[local_memory_index];
mem.set(init_base as u32, &init.data).unwrap();
}
LocalOrImport::Import(imported_memory_index) => {
// Write the initialization data to the memory that