From: Iain Sandoe <iain@sandoe.co.uk>
Date: Sun, 25 Oct 2020 17:34:29 +0000 (+0000)
Subject: Objective-C/C++ : Allow visibility prefix attributes on interfaces.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6e8e1036f79e575fbe1eda57957158291c12f195;p=gcc.git

Objective-C/C++ : Allow visibility prefix attributes on interfaces.

This passes visibiliy through without warning (so that, for example,
__attribute__((__visibility("default"))) does not result in any
diagnostic).

gcc/objc/ChangeLog:

	* objc-act.c (start_class): Accept visibility attributes
	without warning.
---

diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c
index 26cdeddfc5a..68d829fd773 100644
--- a/gcc/objc/objc-act.c
+++ b/gcc/objc/objc-act.c
@@ -7013,12 +7013,14 @@ start_class (enum tree_code code, tree class_name, tree super_name,
 	      tree name = TREE_PURPOSE (attribute);
 
 	      /* TODO: Document what the objc_exception attribute is/does.  */
-	      /* We handle the 'deprecated' and (undocumented) 'objc_exception'
-		 attributes.  */
+	      /* We handle the 'deprecated', 'visibility' and (undocumented)
+		 'objc_exception' attributes.  */
 	      if (is_attribute_p  ("deprecated", name))
 		TREE_DEPRECATED (klass) = 1;
 	      else if (is_attribute_p  ("objc_exception", name))
 		CLASS_HAS_EXCEPTION_ATTR (klass) = 1;
+	      else if (is_attribute_p  ("visibility", name))
+		;
 	      else
 		/* Warn about and ignore all others for now, but store them.  */
 		warning (OPT_Wattributes, "%qE attribute directive ignored", name);