devel/coccinelle - The NetBSD Packages Collection

Coccinelle is a program matching and transformation engine which provides
the language SmPL (Semantic Patch Language) for specifying desired matches
and transformations in C code. Coccinelle was initially targeted towards
performing collateral evolutions in Linux. Such evolutions comprise the
changes that are needed in client code in response to evolutions in library
APIs, and may include modifications such as renaming a function, adding a
function argument whose value is somehow context-dependent, and reorganizing
a data structure. Beyond collateral evolutions, Coccinelle is successfully
used (by us and others) for finding and fixing bugs in systems code.