https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65499
Bug ID: 65499
Summary: Missing "using namespace literals::chrono_literals" in
std::chrono
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: marejde at gmail dot com
Reading http://en.cppreference.com/w/cpp/chrono/operator%22%22min (sorry, I do
not have the spec readily available) it says:
"In addition, within the namespace std::chrono, the directive using namespace
literals::chrono_literals; is provided by the standard library, so that if a
programmer uses using namespace std::chrono; to gain access to the duration
classes, the duration literal operators become visible as well."
The following program:
#include <chrono>
#include <iostream>
int main(void)
{
using namespace std::chrono;
minutes min = 36min;
return 0;
}
Does not compile with GCC 4.9.2 while it does with Clang 3.6.
Looking at GCC trunk as of today I do not see a "using namespace
literals::chrono_literals;" anywhere in libstdc++-v3/include/ . Clang's libc++
has it in the chrono namespace though.
Would be great if this could be fixed before GCC 5.0 is released so I don't
have to sprinkle "using namespace literals::chrono_literals;" in my code to be
able to compile with GCC.
