On Thu, 13 Jun 2024 16:10:12 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > > And... I'm a bit surprised that forward declarations are allowed in C. > > A billion years ago I used a C compiler which would use 16 bits for > > an enum if the enumted values would fit in 16 bits. And it would use 32 > > bits otherwise. So the enumerated values were *required* for the > > compiler to be able to figure out the sizeof. But it was a billion > > years ago. > > Well, I only looked at the one change in ftrace.h which has a > "struct seq_file;" that is not used anywhere else in the file, so that > one definitely can go. The risk is that something which includes ftrace.h is depending upon the enum declaration.
