I wrote recently about the problems with link-time symbol wrapping using the --wrap option to GNU linkers and similar. In short, references don't get wrapped in some cases when they arguably should, if definition and use are in the same file. But there is another way, using symbol replacement, that can do such wrapping if we're careful about self-references and the like. I've now created a plugin for the GNU BFD or gold linkers that implements, in effect, a command-line option for wrapping th...
