syntax_data: {"ast_node_type":"variable","tokens":[{"end":39,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let size = val.layout.size;
context_before:         if let Some(unit) = val.layout.homogeneous_aggregate(cx).ok().and_then(|ha| ha.unit()) {
context_after:             // This size check also catches over-aligned scalars as `size` will be rounded up to a