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rustc: Disallow calling type_of() on dynamically-sized types

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This commit is contained in:
Patrick Walton 2011-03-03 14:10:36 -08:00
parent 5dba7a77d2
commit 2a241ece3a
1 changed files with 10 additions and 0 deletions
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10
src/comp/middle/trans.rs
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@ -417,7 +417,17 @@ fn T_opaque_obj_ptr(type_names tn) -> TypeRef {
}
// This function now fails if called on a type with dynamic size (as its
// return value was always meaningless in that case anyhow). Beware!
//
// TODO: Enforce via a predicate.
fn type_of(@crate_ctxt cx, @ty.t t) -> TypeRef {
if (ty.type_has_dynamic_size(t)) {
log "type_of() called on a type with dynamic size: " +
ty.ty_to_str(t);
fail;
}
ret type_of_inner(cx, t);
}