Dean Michael Berris wrote:
On Sat, Dec 19, 2009 at 5:11 AM, Patrick Horgan <phorgan1@gmail.com> wrote:
And it's really frustrating too. I use optional from the trunk for simple things in a small test program, and get no warnings at all even in programs where I do stupid programming tricks to get gcc to winge about strict aliasing on other lines so that I know I have the compile options right. I can't get gcc to complain about optional in my program at all, even trying different values of -Wstrict-aliasing, but building boost-trunk I see it.
Are you using GCC 4.4.1? Because I'm pretty sure having -Wall turned on with GCC 4.4 on Boost.Trunk would yield the warning.
Yep, with 4.4.1 and with 4.5 and -Wall, and optimization, or alternatively with -fstrict-aliasing -Wstrict-aliasing=3 the following code had no warnings at all with boost-trunk: #include <boost/optional.hpp> char foo() { return *boost::optional<char>('c'); } int main() { char c; c=foo(); }