From: Nick Clifton <nickc@redhat.com>
Date: Thu, 28 May 2020 15:43:01 +0000 (+0100)
Subject: Stop the linker from accepting executable ELF files as inputs to other links.
X-Git-Url: http://git.efficios.com/?p=deliverable%2Fbinutils-gdb.git;a=commitdiff_plain;h=a3fc941881e4224eff3ef20ba1e784026bcc17fa

Stop the linker from accepting executable ELF files as inputs to other links.

	PR 26047
	* ldelf.c (ldelf_after_open): Fail if attempting to link one
	executable into another.
---

diff --git a/ld/ChangeLog b/ld/ChangeLog
index c4d9f89cd1..096b9a5398 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,9 @@
+2020-05-28  Nick Clifton  <nickc@redhat.com>
+
+	PR 26047
+	* ldelf.c (ldelf_after_open): Fail if attempting to link one
+	executable into another.
+
 2020-05-28  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* NEWS: Mention --enable-textrel-check=yes is default for
diff --git a/ld/ldelf.c b/ld/ldelf.c
index efb4b77382..475fd000e6 100644
--- a/ld/ldelf.c
+++ b/ld/ldelf.c
@@ -1065,6 +1065,13 @@ ldelf_after_open (int use_libpath, int native, int is_linux, int is_freebsd,
 	{
 	  int type = 0;
 
+	  if (bfd_link_executable (& link_info)
+	      && elf_tdata (abfd)->elf_header->e_type == ET_EXEC)
+	    {
+	      einfo (_("%F%P: cannot use executable file '%pB' as input to a link\n"),
+		     abfd);
+	    }
+
 	  if (bfd_input_just_syms (abfd))
 	    continue;