[Bug c++/119562] New: ICE on trunk when trying to token-paste a raw string

[rl.alt.accnt at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119562

            Bug ID: 119562
           Summary: ICE on trunk when trying to token-paste a raw string
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rl.alt.accnt at gmail dot com
  Target Milestone: ---

This code currently crashes GCC trunk (https://godbolt.org/z/eT3Mn9PxM):

#define X R##"x()"
X

Crash:
<source>:2:1: error: unterminated raw string
    2 | X
      | ^
<source>:2:1: internal compiler error: Segmentation fault
0x29226a5 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
        ???:0
0x2939676 internal_error(char const*, ...)
        ???:0
0xe56bdc preprocess_file(cpp_reader*)
        ???:0
0xe54a05 c_common_init()
        ???:0
0xc0e35e cxx_init()
        ???:0