syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"concat!($prefix,"}]}
source_snippet:                 concat!($prefix, "-z"),
context_before:                 // (1MB) and users can always inject their own link-args to override this.
context_after:                 concat!($prefix, "stack-size=1048576"),