37bb7af454
This commit fixes a bug where the wrong destination range was used when copying data from the module's memory initialization upon instance initialization. This affects the on-demand allocator only when using the `uffd` feature on Linux and when the Wasm page being initialized is not the last in the module's initial pages. Fixes #2784.
34 lines
1019 B
Rust
34 lines
1019 B
Rust
use anyhow::Result;
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use wasmtime::*;
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#[test]
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fn wrong_import_numbers() -> Result<()> {
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let store = Store::default();
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let module = Module::new(store.engine(), r#"(module (import "" "" (func)))"#)?;
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assert!(Instance::new(&store, &module, &[]).is_err());
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let func = Func::wrap(&store, || {});
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assert!(Instance::new(&store, &module, &[func.clone().into(), func.into()]).is_err());
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Ok(())
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}
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#[test]
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fn initializes_linear_memory() -> Result<()> {
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// Test for https://github.com/bytecodealliance/wasmtime/issues/2784
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let wat = r#"
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(module
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(memory (export "memory") 2)
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(data (i32.const 0) "Hello World!")
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)"#;
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let module = Module::new(&Engine::default(), wat)?;
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let store = Store::new(module.engine());
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let instance = Instance::new(&store, &module, &[])?;
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let memory = instance.get_memory("memory").unwrap();
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let mut bytes = [0; 12];
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memory.read(0, &mut bytes)?;
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assert_eq!(bytes, "Hello World!".as_bytes());
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Ok(())
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}
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