From: Alejandro Colomar <alx@kernel.org>
Date: Sun, 19 Oct 2025 08:10:37 +0000 (+0200)
Subject: lib/typetraits.h: QChar_of(): Add macro
X-Git-Tag: 4.19.0-rc1~88
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f382a7cfb36417acfeb783664ef7bd828d503599;p=thirdparty%2Fshadow.git

lib/typetraits.h: QChar_of(): Add macro

This macro is useful to implement QChar versions of functions.
See ISO C23 for a description of what QChar is.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
---

diff --git a/lib/typetraits.h b/lib/typetraits.h
index ce29a8f32..051edfc66 100644
--- a/lib/typetraits.h
+++ b/lib/typetraits.h
@@ -54,4 +54,15 @@
 )
 
 
+#define QChar_of(s)  typeof                                           \
+(                                                                     \
+	_Generic(s,                                                   \
+		const char *:  (const char){},                        \
+		const void *:  (const char){},                        \
+		char *:        (char){},                              \
+		void *:        (char){}                               \
+	)                                                             \
+)
+
+
 #endif  // include guard