From: Maciej W. Rozycki <macro@linux-mips.org>
Date: Thu, 26 May 2005 18:51:11 +0000 (+0000)
Subject: * elfxx-mips.c (_bfd_mips_elf_section_processing): Warn and
X-Git-Tag: msnyder-tracepoint-checkpoint-branchpoint~43
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1bc8074d91e2c600b0474afa054cbc3dc25c5a76;p=platform%2Fupstream%2Fbinutils.git

* elfxx-mips.c (_bfd_mips_elf_section_processing): Warn and
stop processing of options if one of invalid size is
encountered.
(_bfd_mips_elf_section_from_shdr): Likewise.
(_bfd_mips_elf_fake_sections): Reset the type of empty special
sections.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 25bef0f..ca696de 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,13 @@
+2005-05-26  Mark Kettenis  <kettenis@gnu.org>
+            Maciej W. Rozycki  <macro@linux-mips.org>
+
+	* elfxx-mips.c (_bfd_mips_elf_section_processing): Warn and
+	stop processing of options if one of invalid size is
+	encountered.
+	(_bfd_mips_elf_section_from_shdr): Likewise.
+	(_bfd_mips_elf_fake_sections): Reset the type of empty special
+	sections.
+
 2005-05-26  Richard Henderson  <rth@redhat.com>
 
 	* elf64-alpha.c (struct alpha_elf_link_hash_entry): Remove 
diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index c0bcfc5..55d5f75 100644
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -4987,6 +4987,13 @@ _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr)
 
 	  bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
 					&intopt);
+	  if (intopt.size < sizeof (Elf_External_Options))
+	    {
+	      (*_bfd_error_handler)
+		(_("%B: Warning: bad `%s' option size %u smaller than its header"),
+		abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size);
+	      break;
+	    }
 	  if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
 	    {
 	      bfd_byte buf[8];
@@ -5201,6 +5208,13 @@ _bfd_mips_elf_section_from_shdr (bfd *abfd,
 
 	  bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
 					&intopt);
+	  if (intopt.size < sizeof (Elf_External_Options))
+	    {
+	      (*_bfd_error_handler)
+		(_("%B: Warning: bad `%s' option size %u smaller than its header"),
+		abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size);
+	      break;
+	    }
 	  if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
 	    {
 	      Elf64_Internal_RegInfo intreg;
@@ -5239,8 +5253,10 @@ bfd_boolean
 _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec)
 {
   register const char *name;
+  unsigned int sh_type;
 
   name = bfd_get_section_name (abfd, sec);
+  sh_type = hdr->sh_type;
 
   if (strcmp (name, ".liblist") == 0)
     {
@@ -5342,6 +5358,12 @@ _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec)
       hdr->sh_entsize = 8;
     }
 
+  /* In the unlikely event a special section is empty it has to lose its
+     special meaning.  This may happen e.g. when using `strip' with the
+     "--only-keep-debug" option.  */
+  if (sec->size > 0 && !(sec->flags & SEC_HAS_CONTENTS))
+    hdr->sh_type = sh_type;
+
   /* The generic elf_fake_sections will set up REL_HDR using the default
    kind of relocations.  We used to set up a second header for the
    non-default kind of relocations here, but only NewABI would use