From: Sergey Bugaev <bugaevc@gmail.com>
Date: Thu, 27 Apr 2023 14:42:11 +0000 (+0300)
Subject: cdefs.h: Define __COLD
X-Git-Tag: glibc-2.38~320
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ab341b247fc1c2cd101a87c78f38d2da00c335c;p=thirdparty%2Fglibc.git

cdefs.h: Define __COLD

This expands to __attribute__ ((cold)) when supported. It should be
used to mark up functions that are invoked rarely.

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---

diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 23ec0ebd2ac..9a07e297a6c 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -98,6 +98,12 @@
 #  endif
 # endif
 
+# if __GNUC_PREREQ (4, 3) || __glibc_has_attribute (__cold__)
+#  define __COLD	__attribute__ ((__cold__))
+# else
+#  define __COLD
+# endif
+
 #else	/* Not GCC or clang.  */
 
 # if (defined __cplusplus						\
@@ -110,6 +116,7 @@
 # define __THROW
 # define __THROWNL
 # define __NTH(fct)	fct
+# define __COLD
 
 #endif	/* GCC || clang.  */