Initialization of std::vector<std::string> throws

From	Ralf Goertz <me@myprovider.invalid>
Newsgroups	comp.lang.c++
Subject	Initialization of std::vector<std::string> throws
Date	2019-09-04 14:09 +0200
Organization	A noiseless patient Spider
Message-ID	<qko9ig$97d$1@dont-email.me> (permalink)

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Hi,

why does the declaration

std::vector<std::string> pt({{"One","Two"}});

throw:

terminate called after throwing an instance of 'std::length_error'
  what():  basic_string::_M_create

whereas neither

std::vector<std::string> pt({{"One"}});

nor

std::vector<int>  pt({{1,2}});

does? Full program:

#include <vector>
#include <string>
#include <iostream>

std::vector<std::string>  pt({{"One","Two"}});
int main() {
    for (auto p:pt) std::cout<<p<<std::endl;
}

No warning is given during compilation by gcc version 9.2.1 20190820

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Initialization of std::vector<std::string> throws Ralf Goertz <me@myprovider.invalid> - 2019-09-04 14:09 +0200
  Re: Initialization of std::vector<std::string> throws Sam <sam@email-scan.com> - 2019-09-04 08:20 -0400
    Re: Initialization of std::vector<std::string> throws Ralf Goertz <me@myprovider.invalid> - 2019-09-04 14:33 +0200
      Re: Initialization of std::vector<std::string> throws Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2019-09-05 23:26 -0400
        Re: Initialization of std::vector<std::string> throws Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-09-18 08:37 -0700
      Re: Initialization of std::vector<std::string> throws Ralf Goertz <me@myprovider.invalid> - 2019-11-22 12:12 +0100
        Re: Initialization of std::vector<std::string> throws Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-11-22 13:44 +0000
          Re: Initialization of std::vector<std::string> throws Ralf Goertz <me@myprovider.invalid> - 2019-11-22 16:03 +0100
            Re: Initialization of std::vector<std::string> throws Bo Persson <bo@bo-persson.se> - 2019-11-22 16:22 +0100
            Re: Initialization of std::vector<std::string> throws Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-11-22 16:13 +0000
    Re: Initialization of std::vector<std::string> throws "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-11-22 16:30 +0100
  Re: Initialization of std::vector<std::string> throws Bonita Montero <Bonita.Montero@gmail.com> - 2019-09-04 14:43 +0200

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