3 ms·
1984 was a long time ago, I think most/all compilers ended up adding this optimization at some point. It is somewhat complex to do it correctly, see: http://gc
by paulhodge 14y ago
1984 was a long time ago, I think most/all compilers ended up adding this optimization at some point.
It is somewhat complex to do it correctly, see: http://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html http://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html