------- Comment #1 from pluto at agmk dot net 2006-02-01 10:23 -------
It's not a gcc bug. The code relies on the results of intermediate
subexpressions. According to Stroustrup, The C++ Programming Language, section
6.2.2, "The order of evaluation of subexpressions within
an expression is undefined."
You should use sequence points e.g.:
a ^= b, b ^= a, a ^= b;
--
pluto at agmk dot net changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|A ^= B ^= A ^=B doesn't |A ^= B ^= A ^=B doesn't
|work if compiled with -g |work if compiled with -g
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26060
