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Revert "Revert "Forbid classes with no fields" due to test failures"

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This reverts commit e56a6e8cb0.
This commit is contained in:
Tim Chevalier 2012-06-06 14:20:31 -07:00
parent a6c92f0a17
commit 5e8ef74e22
2 changed files with 15 additions and 0 deletions
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6
src/rustc/middle/typeck/check.rs
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@ -387,6 +387,12 @@ fn check_item(ccx: @crate_ctxt, it: @ast::item) {
};
// typecheck the members
for members.each {|m| check_class_member(class_ccx, class_t, m); }
// Check that there's at least one field
let (fields,_) = split_class_items(members);
if fields.len() < 1u {
ccx.tcx.sess.span_err(it.span, "A class must have at least one \
field");
}
// Check that the class is instantiable
check_instantiable(ccx.tcx, it.span, it.id);
}