https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896
--- Comment #12 from qinzhao at gcc dot gnu.org --- (In reply to Martin Uecker from comment #9) > > Here, we want to use a member of the struct as a sizeĀ > expression. This could work equally at function and file scope. > But the semantics need to be worked out. I have started to work > on a patch for GCC a couple of weeks ago using PLACEHOLDER_EXPR, > but did not get very far. what kind of semantics your patch will support?