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Fix execute after free issue with llvm (and presumably cranelift?)

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This commit is contained in:
Lachlan Sneff
2019-03-04 14:41:56 -08:00
parent 039ebdcf75
commit 7ef2c0dece
6 changed files with 88 additions and 48 deletions
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74
lib/runtime/examples/call.rs
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@@ -1,53 +1,75 @@
use wasmer_runtime::{compile, error, imports, Func, Value};
use wasmer_runtime::{compile, error, imports, Ctx, Func, Value};
use wabt::wat2wasm;
static WAT: &'static str = r#"
(module
(type (;0;) (func (result i32)))
(type (;1;) (func (param i32 i32)))
(type (;2;) (func (param i32) (result i32)))
(func (;0;) (type 0) (result i32)
memory.size
i32.const 65536
i32.mul)
(func (;1;) (type 1) (param i32 i32)
call 0
(type (;0;) (func))
(type (;1;) (func))
(type (;2;) (func))
(type (;3;) (func (result i32)))
(type (;4;) (func (result i32)))
(type (;5;) (func (param i32) (result i32)))
(type (;6;) (func (param i32)))
(import "spectest" "print_i32" (func (;0;) (type 6)))
(func (;1;) (type 0))
(func (;2;) (type 1))
(func (;3;) (type 4) (result i32)
i32.const 13)
(func (;4;) (type 5) (param i32) (result i32)
local.get 0
i32.sub
local.get 1
i32.store)
(func (;2;) (type 2) (param i32) (result i32)
call 0
i32.const 1
i32.add)
(func (;5;) (type 5) (param i32) (result i32)
local.get 0
i32.add
i32.load)
(func (;3;) (type 2) (param i32) (result i32)
i32.const 2
i32.sub)
(func (;6;) (type 6) (param i32)
local.get 0
memory.grow)
(memory (;0;) 1 2)
(export "store" (func 1))
(export "load" (func 2))
(export "memory.grow" (func 3)))
call 0)
(export "one" (func 3))
(export "two" (func 4))
(export "three" (func 5))
(export "four" (func 6)))
"#;
static WAT2: &'static str = r#"
(module
(type $t0 (func (param i32)))
(type $t1 (func))
(func $print_i32 (export "print_i32") (type $t0) (param $lhs i32))
(func $print (export "print") (type $t1))
(table $table (export "table") 10 20 anyfunc)
(memory $memory (export "memory") 1 2)
(global $global_i32 (export "global_i32") i32 (i32.const 666)))
"#;
fn get_wasm() -> Vec<u8> {
wat2wasm(WAT).unwrap()
}
fn foobar(ctx: &mut Ctx) -> i32 {
42
}
fn main() -> Result<(), error::Error> {
let wasm = get_wasm();
let module = compile(&wasm)?;
let imports = imports! {};
let import_module = compile(&wat2wasm(WAT2).unwrap())?;
let import_instance = import_module.instantiate(&imports! {})?;
let imports = imports! {
"spectest" => import_instance,
};
println!("instantiating");
let instance = module.instantiate(&imports)?;
let foo = instance.dyn_func("store")?;
let foo = instance.dyn_func("four")?;
let result = foo.call(&[Value::I32(0), Value::I32(1)]);
let result = foo.call(&[Value::I32(10)]);
println!("result: {:?}", result);