From: Nick Clifton <nickc@redhat.com>
Date: Thu, 30 Sep 2021 11:56:19 +0000 (+0100)
Subject: make objcopy fail if it is asked to redefine symbols in an object file containing... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7325ba796b4432b73388d0cdbd5b0e8c8dee8855;p=binutils-gdb.git

make objcopy fail if it is asked to redefine symbols in an object file containing LTO information.

	* objcopy.c (filter_symbols): Fail if attempting to dredefine
	symbols in an LTO object file.
---

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 5957d6f8677..0d5e4a0f2a0 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,8 @@
+2021-09-30  Nick Clifton  <nickc@redhat.com>
+
+	* objcopy.c (filter_symbols): Fail if attempting to dredefine
+	symbols in an LTO object file.
+
 2021-09-27  Nick Alcock  <nick.alcock@oracle.com>
 
 	* configure: Regenerate.
diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index fd7557fe433..75fd89d338b 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -1542,6 +1542,13 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
 	{
 	  char *new_name;
 
+	  if (name[0] == '_'
+	      && name[1] == '_'
+	      && strcmp (name + (name[2] == '_'), "__gnu_lto_slim") == 0)
+	    {
+	      fatal (_("redefining symbols does not work on LTO-compiled object files"));
+	    }
+	  
 	  new_name = (char *) lookup_sym_redefinition (name);
 	  if (new_name == name
 	      && (flags & BSF_SECTION_SYM) != 0)