Hi all. I'm using GCC 4.8.1 that I built myself on Intel (GNU/Linux).
I'm seeing a strange behavior dealing with __attribute__((unused)) in a
C++ template.
I have a macro UNUSED set to that value, and I've been using it (where
needed, typically when I need to save the value only for use in assert()
calls) as part of the type of a variable, like this:
FooBar* UNUSED foo = something;
assert(foo);
This is working fine, _except_ (apparently) in variables declared in
methods of a template class (weird!). In those situations the UNUSED
seems to be ignored if I write it like that. By "ignored" I mean that
in this form, gcc -O3 -D_NDEBUG will generate a warning that the
variable is not used.
However if I change it to this:
FooBar* foo UNUSED = something;
then it works (as in, g++ does not generate this warning any longer).
Anyone have any thoughts about this? I can try to reduce this to a
repro case if there's interest. Or, am I just doing something wrong?
