id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6094	1 secondALPHA should be an invalid input for a duration.	viboes	viboes	"I expect the following input to be an invalid

1 seconde

to fail (in English). But it works without scanning the last 'e'.

It seems that this is the current practice in the standard

But this goes against current practice:


{{{
#include <sstream>
#include <iostream>

int main()
{
    std::istringstream in(""1e+10"");
    int s = 10;
    in >> s;
    if (!in.fail())
        std::cout << s << '\n';
    else
        std::cout << ""failed\n"";
    char c = 0;
    in >> c;
    if (!in.fail())
        std::cout << c << '\n';
    else
        std::cout << ""failed\n"";
}
}}}


Outputs


{{{
1
e
}}}

I think, however that this is a different case, as integers and letters could be go together.

I can understand that after 

1 second

any non alpha character could be accepted, but not an alphabetic.

The solution could be simple. Once the unit keyword match, a check on the next character (if one) is done to ensure that isalpha(c) is false.


"	Bugs	closed	To Be Determined	chrono	Boost 1.47.0	Problem	invalid