commit 825e48c4e942e3cbdab1b75c04b8c014867d66ab
Author: Milian Wolff <milian.wolff@kdab.com>
Date:   Mon Oct 29 16:21:26 2018 +0100

    Also find CFI in sections of type SHT_X86_64_UNWIND
    
    On my system with g++ (GCC) 8.2.1 20180831 with GNU gold (GNU Binutils
    2.31.1) 1.16, the .eh_frame section does not have type PROGBITS
    but rather is using X86_64_UNWIND nowadays:
    
    ```
    $ echo "int main(){ return 0; }" > test.c
    $ gcc test.c
    $ readelf --sections a.out | grep .eh_frame
      [14] .eh_frame         X86_64_UNWIND    0000000000000670  00000670
      [15] .eh_frame_hdr     X86_64_UNWIND    0000000000000724  00000724
    ```
    
    Without this patch, libdw refuses to use the available unwind
    information, leading to broken backtraces while unwinding. With the
    patch applied, unwinding works once more in such situations.
    
    Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
    Signed-off-by: Mark Wielaard <mark@klomp.org>
    Tested-by: Milian Wolff <milian.wolff@kdab.com>

diff --git a/libdw/dwarf_getcfi_elf.c b/libdw/dwarf_getcfi_elf.c
index 315cc02..adcaea0 100644
--- a/libdw/dwarf_getcfi_elf.c
+++ b/libdw/dwarf_getcfi_elf.c
@@ -298,7 +298,7 @@ getcfi_shdr (Elf *elf, const GElf_Ehdr *ehdr)
 	    }
 	  else if (!strcmp (name, ".eh_frame"))
 	    {
-	      if (shdr->sh_type == SHT_PROGBITS)
+	      if (shdr->sh_type != SHT_NOBITS)
 		return getcfi_scn_eh_frame (elf, ehdr, scn, shdr,
 					    hdr_scn, hdr_vaddr);
 	      else

commit 4b0342b85b5b1a3d3636e06e3b5320954828dfb1
Author: Mark Wielaard <mark@klomp.org>
Date:   Tue Nov 6 12:01:25 2018 +0100

    backends: Add x86_64 section_type_name for SHT_X86_64_UNWIND.
    
    Makes sure that eu-readelf and eu-elflint recognize and show the
    x86_64 specific section type correctly.
    
    Signed-off-by: Mark Wielaard <mark@klomp.org>
    Tested-by: Milian Wolff <milian.wolff@kdab.com>

diff --git a/backends/x86_64_init.c b/backends/x86_64_init.c
index adfa479..49f6c6c 100644
--- a/backends/x86_64_init.c
+++ b/backends/x86_64_init.c
@@ -1,5 +1,5 @@
 /* Initialization of x86-64 specific backend library.
-   Copyright (C) 2002-2009, 2013 Red Hat, Inc.
+   Copyright (C) 2002-2009, 2013, 2018 Red Hat, Inc.
    Copyright (C) H.J. Lu <hjl.tools@gmail.com>, 2015.
    This file is part of elfutils.
    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -55,6 +55,7 @@ x86_64_init (Elf *elf __attribute__ ((unused)),
   eh->name = "AMD x86-64";
   x86_64_init_reloc (eh);
   HOOK (eh, reloc_simple_type);
+  HOOK (eh, section_type_name);
   if (eh->class == ELFCLASS32)
     eh->core_note = x32_core_note;
   else
diff --git a/backends/x86_64_symbol.c b/backends/x86_64_symbol.c
index e07b180..98457bc 100644
--- a/backends/x86_64_symbol.c
+++ b/backends/x86_64_symbol.c
@@ -1,5 +1,5 @@
 /* x86_64 specific symbolic name handling.
-   Copyright (C) 2002, 2005 Red Hat, Inc.
+   Copyright (C) 2002, 2005, 2018 Red Hat, Inc.
    This file is part of elfutils.
    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -59,3 +59,15 @@ x86_64_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
       return ELF_T_NUM;
     }
 }
+
+/* Return symbolic representation of section type.  */
+const char *
+x86_64_section_type_name (int type,
+			  char *buf __attribute__ ((unused)),
+			  size_t len __attribute__ ((unused)))
+{
+  if (type == SHT_X86_64_UNWIND)
+    return "X86_64_UNWIND";
+
+  return NULL;
+}

commit 22ec8efc1dd87cdc7892523457eb55990b967224
Author: Mark Wielaard <mark@klomp.org>
Date:   Sat Nov 10 23:33:03 2018 +0100

    elflint: Allow PT_GNU_EH_FRAME segment to match SHT_X86_64_UNWIND section.
    
    The gold linker might generate an .eh_frame_hdr with a SHT_X86_64_UNWIND
    type instead of a SHT_PROGBITS type.
    
    Signed-off-by: Mark Wielaard <mark@klomp.org>

diff --git a/src/elflint.c b/src/elflint.c
index 184ca12..810c8bd 100644
--- a/src/elflint.c
+++ b/src/elflint.c
@@ -4633,8 +4633,10 @@ program header offset in ELF header and PHDR entry do not match"));
 	      any = true;
 	      shdr = gelf_getshdr (scn, &shdr_mem);
 	      if (shdr != NULL
-		  && shdr->sh_type == (is_debuginfo
-				       ? SHT_NOBITS : SHT_PROGBITS)
+		  && ((is_debuginfo && shdr->sh_type == SHT_NOBITS)
+		      || (! is_debuginfo
+			  && (shdr->sh_type == SHT_PROGBITS
+			      || shdr->sh_type == SHT_X86_64_UNWIND)))
 		  && elf_strptr (ebl->elf, shstrndx, shdr->sh_name) != NULL
 		  && ! strcmp (".eh_frame_hdr",
 			       elf_strptr (ebl->elf, shstrndx, shdr->sh_name)))