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Simplify write_value_to_ptr

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Oliver Schneider 2017-08-28 16:06:49 +02:00
parent 129b914bdc
commit 2f0dcfba1d
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1 changed files with 6 additions and 13 deletions
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19
src/librustc_mir/interpret/eval_context.rs
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@ -1622,20 +1622,13 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
}
Value::ByVal(primval) => {
let size = self.type_size(dest_ty)?.expect("dest type must be sized");
// TODO: This fn gets called with sizes like 0 and 6, which cannot be a primitive type
// and hence is not supported by write_primval.
// (E.g. in the arrays.rs testcase.) That seems to only happen for Undef though,
// so we special-case that here.
match primval {
PrimVal::Undef => {
self.memory.mark_definedness(dest, size, false)?;
}
_ => {
// TODO: Do we need signedness?
self.memory.write_primval(dest.to_ptr()?, primval, size, false)?;
}
if size == 0 {
assert!(primval.is_undef());
Ok(())
} else {
// TODO: Do we need signedness?
self.memory.write_primval(dest.to_ptr()?, primval, size, false)
}
Ok(())
}
Value::ByValPair(a, b) => self.write_pair_to_ptr(a, b, dest.to_ptr()?, dest_ty),
}