Compile a probe of common Dinkumware instantiations and find byte-identical
copies in .text (relocations masked; every callee must itself be library/CRT
code). 255 functions reclassified from fn to lib. Known gap: some stringbuf
members (e.g. seekoff 0x40224b) differ slightly from the probe and remain fn.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
