http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57647
--- Comment #6 from vijay Nag <vijunag at gmail dot com> --- (In reply to Andreas Schwab from comment #5) > ((unsigned long*)foo)++ and ((unsigned long *)foo++) are not equivalent > expressions. The former is the same as foo = (char *)((unsigned long*)foo + > 1), the latter is foo += sizeof(*foo) (and the cast has no effect). ((unsigned long*)foo)++ is no longer a valid C expression for the cast evaluates it to be an R-value rather than L-value
