[Bug c++/105300] [10/11/12/13 Regression] segfault from static_assert with user-defined string suffix argument

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105300

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |10.5
      Known to fail|                            |6.1.0
            Summary|segfault from static_assert |[10/11/12/13 Regression]
                   |with user-defined string    |segfault from static_assert
                   |suffix argument             |with user-defined string
                   |                            |suffix argument
           Keywords|                            |diagnostic
      Known to work|                            |5.5.0

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
MSVC produces a decent error message:

<source>(2): error C3690: expected a string literal, but found a user-defined
string literal instead

Note best definition of the operator is just:
void operator""_x(const char *, decltype(sizeof(0)));
static_assert(false, "foo"_x);


Oh we started to ICE between GCC 5 and 6. Most likely when we started to print
out the message too.