Files
wasmer/tests/compilers/traps.rs

493 lines
13 KiB
Rust

use anyhow::Result;
use std::panic::{self, AssertUnwindSafe};
use wasmer::*;
#[compiler_test(traps)]
fn test_trap_return(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module
(func $hello (import "" "hello"))
(func (export "run") (call $hello))
)
"#;
let module = Module::new(&store, wat)?;
let hello_type = FunctionType::new(vec![], vec![]);
let hello_func = Function::new(&mut store, &hello_type, |_| {
Err(RuntimeError::new("test 123"))
});
let instance = Instance::new(
&mut store,
&module,
&imports! {
"" => {
"hello" => hello_func
}
},
)?;
let run_func = instance
.exports
.get_function("run")
.expect("expected function export");
let e = run_func
.call(&mut store, &[])
.expect_err("error calling function");
assert_eq!(e.message(), "test 123");
Ok(())
}
#[cfg_attr(target_env = "musl", ignore)]
#[compiler_test(traps)]
fn test_trap_trace(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $hello_mod
(func (export "run") (call $hello))
(func $hello (unreachable))
)
"#;
let module = Module::new(&store, wat)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let run_func = instance
.exports
.get_function("run")
.expect("expected function export");
let e = run_func
.call(&mut store, &[])
.expect_err("error calling function");
let trace = e.trace();
assert_eq!(trace.len(), 2);
assert_eq!(trace[0].module_name(), "hello_mod");
assert_eq!(trace[0].func_index(), 1);
assert_eq!(trace[0].function_name(), Some("hello"));
assert_eq!(trace[1].module_name(), "hello_mod");
assert_eq!(trace[1].func_index(), 0);
assert_eq!(trace[1].function_name(), None);
assert!(
e.message().contains("unreachable"),
"wrong message: {}",
e.message()
);
Ok(())
}
#[compiler_test(traps)]
fn test_trap_trace_cb(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $hello_mod
(import "" "throw" (func $throw))
(func (export "run") (call $hello))
(func $hello (call $throw))
)
"#;
let fn_type = FunctionType::new(vec![], vec![]);
let fn_func = Function::new(&mut store, &fn_type, |_| Err(RuntimeError::new("cb throw")));
let module = Module::new(&store, wat)?;
let instance = Instance::new(
&mut store,
&module,
&imports! {
"" => {
"throw" => fn_func
}
},
)?;
let run_func = instance
.exports
.get_function("run")
.expect("expected function export");
let e = run_func
.call(&mut store, &[])
.expect_err("error calling function");
let trace = e.trace();
println!("Trace {:?}", trace);
// TODO: Reenable this (disabled as it was not working with llvm/singlepass)
// assert_eq!(trace.len(), 2);
// assert_eq!(trace[0].module_name(), "hello_mod");
// assert_eq!(trace[0].func_index(), 2);
// assert_eq!(trace[1].module_name(), "hello_mod");
// assert_eq!(trace[1].func_index(), 1);
assert_eq!(e.message(), "cb throw");
Ok(())
}
#[cfg_attr(target_env = "musl", ignore)]
#[compiler_test(traps)]
fn test_trap_stack_overflow(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $rec_mod
(func $run (export "run") (call $run))
)
"#;
let module = Module::new(&store, wat)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let run_func = instance
.exports
.get_function("run")
.expect("expected function export");
let e = run_func
.call(&mut store, &[])
.expect_err("error calling function");
// We specifically don't check the stack trace here: stack traces after
// stack overflows are not generally possible due to unreliable unwinding
// information.
assert!(e.message().contains("call stack exhausted"));
Ok(())
}
#[cfg_attr(target_env = "musl", ignore)]
#[compiler_test(traps)]
fn trap_display_pretty(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $m
(func $die unreachable)
(func call $die)
(func $foo call 1)
(func (export "bar") call $foo)
)
"#;
let module = Module::new(&store, wat)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let run_func = instance
.exports
.get_function("bar")
.expect("expected function export");
let e = run_func
.call(&mut store, &[])
.expect_err("error calling function");
assert_eq!(
e.to_string(),
"\
RuntimeError: unreachable
at die (m[0]:0x23)
at <unnamed> (m[1]:0x27)
at foo (m[2]:0x2c)
at <unnamed> (m[3]:0x31)"
);
Ok(())
}
#[cfg_attr(target_env = "musl", ignore)]
#[compiler_test(traps)]
fn trap_display_multi_module(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $a
(func $die unreachable)
(func call $die)
(func $foo call 1)
(func (export "bar") call $foo)
)
"#;
let module = Module::new(&store, wat)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let bar = instance.exports.get_function("bar")?.clone();
let wat = r#"
(module $b
(import "" "" (func $bar))
(func $middle call $bar)
(func (export "bar2") call $middle)
)
"#;
let module = Module::new(&store, wat)?;
let instance = Instance::new(
&mut store,
&module,
&imports! {
"" => {
"" => bar
}
},
)?;
let bar2 = instance
.exports
.get_function("bar2")
.expect("expected function export");
let e = bar2
.call(&mut store, &[])
.expect_err("error calling function");
assert_eq!(
e.to_string(),
"\
RuntimeError: unreachable
at die (a[0]:0x23)
at <unnamed> (a[1]:0x27)
at foo (a[2]:0x2c)
at <unnamed> (a[3]:0x31)
at middle (b[1]:0x29)
at <unnamed> (b[2]:0x2e)"
);
Ok(())
}
#[compiler_test(traps)]
fn trap_start_function_import(config: crate::Config) -> Result<()> {
let mut store = config.store();
let binary = r#"
(module $a
(import "" "" (func $foo))
(start $foo)
)
"#;
let module = Module::new(&store, binary)?;
let sig = FunctionType::new(vec![], vec![]);
let func = Function::new(&mut store, &sig, |_| Err(RuntimeError::new("user trap")));
let err = Instance::new(
&mut store,
&module,
&imports! {
"" => {
"" => func
}
},
)
.err()
.unwrap();
match err {
InstantiationError::Link(_)
| InstantiationError::DifferentStores
| InstantiationError::DifferentArchOS
| InstantiationError::CpuFeature(_) => {
panic!("It should be a start error")
}
InstantiationError::Start(err) => {
assert_eq!(err.message(), "user trap");
}
}
Ok(())
}
#[compiler_test(traps)]
fn rust_panic_import(config: crate::Config) -> Result<()> {
let mut store = config.store();
let binary = r#"
(module $a
(import "" "foo" (func $foo))
(import "" "bar" (func $bar))
(func (export "foo") call $foo)
(func (export "bar") call $bar)
)
"#;
let module = Module::new(&store, binary)?;
let sig = FunctionType::new(vec![], vec![]);
let func = Function::new(&mut store, &sig, |_| panic!("this is a panic"));
let f0 = Function::new_typed(&mut store, || panic!("this is another panic"));
let instance = Instance::new(
&mut store,
&module,
&imports! {
"" => {
"foo" => func,
"bar" => f0
}
},
)?;
let func = instance.exports.get_function("foo")?.clone();
let err = panic::catch_unwind(AssertUnwindSafe(|| {
drop(func.call(&mut store, &[]));
}))
.unwrap_err();
assert_eq!(err.downcast_ref::<&'static str>(), Some(&"this is a panic"));
// TODO: Reenable this (disabled as it was not working with llvm/singlepass)
// It doesn't work either with cranelift and `--test-threads=1`.
// let func = instance.exports.get_function("bar")?.clone();
// let err = panic::catch_unwind(AssertUnwindSafe(|| {
// drop(func.call(&[]));
// }))
// .unwrap_err();
// assert_eq!(
// err.downcast_ref::<&'static str>(),
// Some(&"this is another panic")
// );
Ok(())
}
#[compiler_test(traps)]
fn rust_panic_start_function(config: crate::Config) -> Result<()> {
let mut store = config.store();
let binary = r#"
(module $a
(import "" "" (func $foo))
(start $foo)
)
"#;
let module = Module::new(&store, binary)?;
let sig = FunctionType::new(vec![], vec![]);
let func = Function::new(&mut store, &sig, |_| panic!("this is a panic"));
let err = panic::catch_unwind(AssertUnwindSafe(|| {
drop(Instance::new(
&mut store,
&module,
&imports! {
"" => {
"" => func
}
},
));
}))
.unwrap_err();
assert_eq!(err.downcast_ref::<&'static str>(), Some(&"this is a panic"));
let func = Function::new_typed(&mut store, || panic!("this is another panic"));
let err = panic::catch_unwind(AssertUnwindSafe(|| {
drop(Instance::new(
&mut store,
&module,
&imports! {
"" => {
"" => func
}
},
));
}))
.unwrap_err();
assert_eq!(
err.downcast_ref::<&'static str>(),
Some(&"this is another panic")
);
Ok(())
}
#[compiler_test(traps)]
fn mismatched_arguments(config: crate::Config) -> Result<()> {
let mut store = config.store();
let binary = r#"
(module $a
(func (export "foo") (param i32))
)
"#;
let module = Module::new(&store, binary)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let func: &Function = instance.exports.get("foo")?;
assert_eq!(
func.call(&mut store, &[]).unwrap_err().message(),
"Parameters of type [] did not match signature [I32] -> []"
);
assert_eq!(
func.call(&mut store, &[Value::F32(0.0)])
.unwrap_err()
.message(),
"Parameters of type [F32] did not match signature [I32] -> []",
);
assert_eq!(
func.call(&mut store, &[Value::I32(0), Value::I32(1)])
.unwrap_err()
.message(),
"Parameters of type [I32, I32] did not match signature [I32] -> []"
);
Ok(())
}
#[cfg_attr(target_env = "musl", ignore)]
#[compiler_test(traps)]
fn call_signature_mismatch(config: crate::Config) -> Result<()> {
let mut store = config.store();
let binary = r#"
(module $a
(func $foo
i32.const 0
call_indirect)
(func $bar (param i32))
(start $foo)
(table 1 anyfunc)
(elem (i32.const 0) 1)
)
"#;
let module = Module::new(&store, binary)?;
let err = Instance::new(&mut store, &module, &imports! {}).expect_err("expected error");
assert_eq!(
format!("{}", err),
"\
RuntimeError: indirect call type mismatch
at foo (a[0]:0x30)\
"
);
Ok(())
}
#[compiler_test(traps)]
#[cfg_attr(target_env = "musl", ignore)]
fn start_trap_pretty(config: crate::Config) -> Result<()> {
let mut store = config.store();
let wat = r#"
(module $m
(func $die unreachable)
(func call $die)
(func $foo call 1)
(func $start call $foo)
(start $start)
)
"#;
let module = Module::new(&store, wat)?;
let err = Instance::new(&mut store, &module, &imports! {}).expect_err("expected error");
assert_eq!(
format!("{}", err),
"\
RuntimeError: unreachable
at die (m[0]:0x1d)
at <unnamed> (m[1]:0x21)
at foo (m[2]:0x26)
at start (m[3]:0x2b)\
"
);
Ok(())
}
#[compiler_test(traps)]
fn present_after_module_drop(config: crate::Config) -> Result<()> {
let mut store = config.store();
let module = Module::new(&store, r#"(func (export "foo") unreachable)"#)?;
let instance = Instance::new(&mut store, &module, &imports! {})?;
let func: Function = instance.exports.get_function("foo")?.clone();
println!("asserting before we drop modules");
assert_trap(func.call(&mut store, &[]).unwrap_err());
drop((instance, module));
println!("asserting after drop");
assert_trap(func.call(&mut store, &[]).unwrap_err());
return Ok(());
fn assert_trap(t: RuntimeError) {
println!("{}", t);
// assert_eq!(t.trace().len(), 1);
// assert_eq!(t.trace()[0].func_index(), 0);
}
}