syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"\"On"}]}
source_snippet:         "On x86-32 targets, it overrides the default ABI to return small structs in registers.
context_before:     reg_struct_return: bool = (false, parse_bool, [TRACKED TARGET_MODIFIER],
context_after:         It is UNSOUND to link together crates that use different values for this flag!"),