From: Iain Sandoe <iain@sandoe.co.uk>
Date: Tue, 30 Apr 2024 14:11:56 +0000 (+0100)
Subject: Objective-C, NeXT, v2: Correct a regression in code-gen.
X-Git-Tag: releases/gcc-11.5.0~159
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48400d6c95c836d43532bb00a3a57f3c458e0778;p=thirdparty%2Fgcc.git

Objective-C, NeXT, v2: Correct a regression in code-gen.

There have been several changes in the ABI of Objective-C which
depend on the OS version targetted.  In this case Protocols and
LabelProtocols should be made weak/hidden/extern from macOS 10.7
however there was a mistake in the code causing this to occur
from macOS 10.6.  Fixed thus.

gcc/objc/ChangeLog:

	* objc-next-runtime-abi-02.c (WEAK_PROTOCOLS_AFTER): New.
	(next_runtime_abi_02_protocol_decl): Use WEAK_PROTOCOLS_AFTER
	to determine this ABI change.
	(build_v2_protocol_list_address_table): Likewise.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
(cherry picked from commit 9b5c0be59d0f94df0517820f00b4520b5abddd8c)
---

diff --git a/gcc/objc/objc-next-runtime-abi-02.c b/gcc/objc/objc-next-runtime-abi-02.c
index cb22a773fcb2..2f79f99c7319 100644
--- a/gcc/objc/objc-next-runtime-abi-02.c
+++ b/gcc/objc/objc-next-runtime-abi-02.c
@@ -70,6 +70,7 @@ along with GCC; see the file COPYING3.  If not see
 #define TAG_MSGSENDSUPER_STRET	"objc_msgSendSuper2_stret"
 
 #define USE_FIXUP_BEFORE	100600
+#define WEAK_PROTOCOLS_AFTER	100700
 #define TAG_FIXUP		"_fixup"
 
 
@@ -1031,7 +1032,7 @@ next_runtime_abi_02_protocol_decl (tree p)
   /* static struct _objc_protocol _OBJC_Protocol_<mumble>; */
   snprintf (buf, BUFSIZE, "_OBJC_Protocol_%s",
 	    IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
-  if (flag_next_runtime >= USE_FIXUP_BEFORE)
+  if (flag_next_runtime >= WEAK_PROTOCOLS_AFTER)
     {
       decl = create_hidden_decl (objc_v2_protocol_template, buf);
       DECL_WEAK (decl) = true;
@@ -2317,7 +2318,7 @@ build_v2_protocol_list_address_table (void)
       gcc_assert (ref->id && TREE_CODE (ref->id) == PROTOCOL_INTERFACE_TYPE);
       snprintf (buf, BUFSIZE, "_OBJC_LabelProtocol_%s",
 		IDENTIFIER_POINTER (PROTOCOL_NAME (ref->id)));
-      if (flag_next_runtime >= USE_FIXUP_BEFORE)
+      if (flag_next_runtime >= WEAK_PROTOCOLS_AFTER)
 	{
 	  decl = create_hidden_decl (objc_protocol_type, buf, /*is def=*/true);
 	  DECL_WEAK (decl) = true;