Fix a panic with Func::new and reference types#2039
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alexcrichton merged 1 commit intoJul 17, 2020
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Currently `Func::new` will panic if one of the arguments of the function is a reference type and the `Store` doesn't have reference types enabled. This happens because cranelift isn't configure to enable stack maps but the register allocators expects them to exist when reference types are seen. The fix here is to always enable reference types in cranelift for our trampoline generation and `Func::new`. This should hopefully ensure that trampolines are generated correctly and they'll just not be able to get hooked up to an `Instance` because validation will prevent reference types from being used elsewhere.
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Currently
Func::newwill panic if one of the arguments of the functionis a reference type and the
Storedoesn't have reference typesenabled. This happens because cranelift isn't configure to enable stack
maps but the register allocators expects them to exist when reference
types are seen.
The fix here is to always enable reference types in cranelift for our
trampoline generation and
Func::new. This should hopefully ensure thattrampolines are generated correctly and they'll just not be able to get
hooked up to an
Instancebecause validation will prevent referencetypes from being used elsewhere.