Re: lib/57288

[Mingye Wang <arthur200126%gmail.com@localhost>]

The following reply was made to PR lib/57288; it has been noted by GNATS.

From: Mingye Wang <arthur200126%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: lib/57288
Date: Sat, 25 Mar 2023 14:10:37 +0800

 Huh, __has_builtin may be too recent (GCC 10) to stuff into these
 headers. I am afraid that some hard version check is in order. Or you
 could just...
 
 #if defined(__clang__) || __GNUC__ >= 10
 #define __has_fancy_builtin(x) __has_builtin(x)
 #else
 #define __has_fancy_builtin(x) 0
 #endif
 
 Well, it's "fancy" because it would be very wrong if applied to the
 usual things from before GCC 10. Nah it's a terrible idea.