From: LIU Hao <lh_mouse@126.com>
Date: Sat, 29 Mar 2025 14:47:54 +0000 (+0800)
Subject: gcc/mingw: Align `.refptr.` to 8-byte boundaries for 64-bit targets
X-Git-Tag: basepoints/gcc-16~521
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d42378acdf1a011420ba78685f7a6c79808c881;p=thirdparty%2Fgcc.git

gcc/mingw: Align `.refptr.` to 8-byte boundaries for 64-bit targets

Windows only requires sections to be aligned on a 4-byte boundary. This used
to work because in binutils the `.rdata` section is over-aligned to a 16-byte
boundary, which will be fixed in the future.

This matches the output of Clang.

Signed-off-by: LIU Hao <lh_mouse@126.com>
Signed-off-by: Jonathan Yong <10walls@gmail.com>

gcc/ChangeLog:
	* config/mingw/winnt.cc (mingw_pe_file_end): Add `.p2align`.
---

diff --git a/gcc/config/mingw/winnt.cc b/gcc/config/mingw/winnt.cc
index adaa6dfa3cff..08a761d3a6d4 100644
--- a/gcc/config/mingw/winnt.cc
+++ b/gcc/config/mingw/winnt.cc
@@ -819,6 +819,7 @@ mingw_pe_file_end (void)
 	    }
 
 	  fprintf (asm_out_file, "\t.section\t.rdata$%s, \"dr\"\n"
+			   "\t.p2align\t3, 0\n"
 	  		   "\t.globl\t%s\n"
 			   "\t.linkonce\tdiscard\n", oname, oname);
 	  fprintf (asm_out_file, "%s:\n\t.quad\t%s\n", oname, name);