3 ms·

The price you pay for GCC nested (local) functions is an executable stack with 'trampolines'. I'm a fan of nested functions but don't think the executable stac

• sirwhinesalot 11mo ago
  You misunderstood my comment. GNU local function syntax, C++ [&] lambda behavior (i.e., a hidden struct).
  • nutjob2 11mo ago
    I really did, my comment is specific to C.
    • LegionMammal978 11mo ago
      The only reason that GCC needs executable trampolines is for the program to be able to create an ordinary function pointer and have all the captured data come along with it. The proposal is to reuse the syntax of nested functions, but change the semantics so that they are no longer callable via ordinary function pointers, but rather "fat pointers" that reference the captured data alongside the raw function address. This is similar to the method used by C++ and does not need trampolines.
      • dfawcus 11mo ago
        Meaning something that generates code similar to what I have in this comment? https://news.ycombinator.com/item?id=46243298 https://news.ycombinator.com/item?id=46243298
        • sirwhinesalot 11mo ago
          Yeah something like that, though built-in to the compiler.