From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-7.2.50-sparc-add-workaround-to-broken-debug-files.patch

;; Toolchain on sparc is slightly broken and debuginfo files are generated

;; with non 64bit aligned tables/offsets.

;; See for example readelf -S ../Xvnc.debug.

;;

;; As a consenquence calculation of sectp->filepos as used in

;; dwarf2_read_section (gdb/dwarf2read.c:1525) will return a non aligned buffer

;; that cannot be used directly as done with MMAP.

;; Usage will result in a BusError.

;;

;; While we figure out what's wrong in the toolchain and do a full archive

;; rebuild to fix it, we need to be able to use gdb :)

;;=push

diff --git a/gdb/gdb_bfd.c b/gdb/gdb_bfd.c

--- a/gdb/gdb_bfd.c

+++ b/gdb/gdb_bfd.c

@@ -24,12 +24,14 @@

 #include "hashtab.h"

 #include "filestuff.h"

 #include "vec.h"

+#ifndef __sparc__

 #ifdef HAVE_MMAP

 #include <sys/mman.h>

 #ifndef MAP_FAILED

 #define MAP_FAILED ((void *) -1)

 #endif

 #endif

+#endif

 #include "target.h"

 #include "gdb/fileio.h"

 #include "inferior.h"

@@ -484,6 +486,7 @@ free_one_bfd_section (bfd *abfd, asection *sectp, void *ignore)

   if (sect != NULL && sect->data != NULL)

     {

+#ifndef __sparc__

 #ifdef HAVE_MMAP

       if (sect->map_addr != NULL)

 	{

@@ -493,6 +496,7 @@ free_one_bfd_section (bfd *abfd, asection *sectp, void *ignore)

 	  gdb_assert (res == 0);

 	}

       else

+#endif

 #endif

 	xfree (sect->data);

     }

@@ -659,6 +663,7 @@ gdb_bfd_map_section (asection *sectp, bfd_size_type *size)

   if (descriptor->data != NULL)

     goto done;

+#ifndef __sparc__

 #ifdef HAVE_MMAP

   if (!bfd_is_section_compressed (abfd, sectp))

     {

@@ -693,6 +698,7 @@ gdb_bfd_map_section (asection *sectp, bfd_size_type *size)

 	}

     }

 #endif /* HAVE_MMAP */

+#endif

   /* Handle compressed sections, or ordinary uncompressed sections in

      the no-mmap case.  */