http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50606
--- Comment #2 from dcb <dcb314 at hotmail dot com> 2012-05-14 18:24:44 UTC --- (In reply to comment #1) > printf warnings are handled in the FE, so we would need constant-propagation > in > the FE. Clang implements it, so I know it is possible. I think my bug report wasn't clearly worded. printf was merely an example function. I am interested in having gcc track when it knows for certain that a pointer is NULL, so that it can detect uses that won't work and emit a warning. One use of a NULL pointer that won't work is to read what it's pointing at. > However, no current > contributor to GCC has enough time and interest to implement it, so unless > some > new contributors appear, don't expect this anytime soon. Righto.
