Am Montag, dem 04.12.2023 um 21:33 +0000 schrieb Joseph Myers: > On Mon, 4 Dec 2023, Siddhesh Poyarekar wrote: > > > On 2023-12-04 13:48, Martin Uecker wrote: > > > > I empathize with Jakub's stated use case though of keeping the C > > > > frontend support for testing purposes, but that could easily be done > > > > behind a flag, or by putting nested C func deprecation behind a flag. > > > > > > I am relatively sure C will get some form of nested functions. > > > Maybe as anonymous nested functions, i.e. lambdas, but I do > > > not see a fundamental difference here (I personally like naming > > > things for clarity, so i prefer named nested functions) > > > > If (assuming from them being called lambdas) they are primarily for small > > functions without side-effects then it's already a significantly stronger > > specification than what we have right now with C nested functions. That > > would > > end up enforcing what you demonstrate as the good way to use nested > > functions. > > The key feature of lambdas (which failed to make it into C23) for this > purpose is that you can't convert them to function pointers, which > eliminates any need for trampolines.
And also makes them useful only for template-like macro programming, but not much else. So my understanding was that this needs to be addressed at some point. Martin >
