From: H.J. Lu <hjl.tools@gmail.com>
Date: Tue, 23 Sep 2025 02:05:14 +0000 (+0800)
Subject: elf: Disallow the empty global symbol name
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1108620d7a521f1c85d2f629031ce0fbae14e331;p=thirdparty%2Fbinutils-gdb.git

elf: Disallow the empty global symbol name

Reject the empty global symbol name, "".

	PR ld/33456
	* elflink.c (elf_link_add_object_symbols): Disallow the empty
	global symbol name.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---

diff --git a/bfd/elflink.c b/bfd/elflink.c
index b04b017747f..66982f82b94 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -5096,6 +5096,13 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
       if (name == NULL)
 	goto error_free_vers;
 
+      if (name[0] == '\0')
+	{
+	  _bfd_error_handler (_("%pB: corrupt symbol table"), abfd);
+	  bfd_set_error (bfd_error_bad_value);
+	  goto error_free_vers;
+	}
+
       if (isym->st_shndx == SHN_COMMON
 	  && (abfd->flags & BFD_PLUGIN) != 0)
 	{