[bug-gettext] [bug #50117] bogus "unterminated character constant" warning with C++14 single-quotation-mark as digit separators

[Moritz Bunkus]

URL:
  <http://savannah.gnu.org/bugs/?50117>

                 Summary: bogus "unterminated character constant" warning with
C++14 single-quotation-mark as digit separators
                 Project: GNU gettext
            Submitted by: mbunkus
            Submitted on: Sun 22 Jan 2017 11:03:34 AM GMT
                Category: C
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

xgettext doesn't support C++14's "Single-quotation-mark as a digit separator"
feature[1] properly. It'll issue a warning about an "unterminated character
constant" with the following trivial program:

------------------------------------------------------------
int main() {
  auto i = 1'234;
  return 0;
}
------------------------------------------------------------

Invoke xgettext:

------------------------------------------------------------
[0 address@hidden ~/test] xgettext -o test.pot test2.cpp
test2.cpp:2: warning: unterminated character constant
------------------------------------------------------------

If you want to verify that this is an actually valid C++14 program:

------------------------------------------------------------
[0 address@hidden ~/test] g++ -std=c++14 -o test2 test2.cpp
[0 address@hidden ~/test]
------------------------------------------------------------

[1] http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3781.pdf





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