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From: "emsr at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110343] [C++26] P2558R2 - Add @, $, and ` to the basic
 character set
Date: Tue, 09 Jan 2024 18:35:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110343

--- Comment #2 from Ed Smith-Rowland <emsr at gcc dot gnu.org> ---
The example in the paper:
----------------------------------------------------------
/*
gcc -E charset.c > charhelp.c
gcc -o charhelp charhelp.c
*/

#include <stdio.h>

#define STR(x) #x

int main()
{
  printf("%s", STR(\u0060)); // U+0060 is ` GRAVE ACCENT
  printf("%s", "\u0060"); // U+0060 is ` GRAVE ACCENT
}
----------------------------------------------------------
Does give an error, but when I preprocess the file with -E the result
compiles just fine with either C or C++.

Preprocessor bug?=