I agree the patch is not "necessary" but it adds the beauty of simmetry and simplicity
It is certainly simpler; I'm not sure it really adds "simmetry" to anything; if anything it is less orthogonal because other VLA cases require the length.
the former chunk does not create aux variables and looks far better than
Creation of (local) variables is probably not a huge worry in LuaJIT; it'll likely deal with that. It's the creation of values that can be expensive, and it already creates a string value either way.
In any case, I meant that it would be just as easy to wrap it within Lua, as suggested by someone earlier in the thread.
Here's another possible way to do that (untested):
function cstring(str)
return #str+1, str
end
...
local var_01 = ffi.new("char[?]", cstring "default value for var_01" )
- Claire.
