Fix compile time warnings building the binutils with gcc 7.1.1.

bfd	* elf32-xtensa.c (elf_xtensa_get_plt_section): Increase length of
	plt_name buffer.
	(elf_xtensa_get_gotplt_section): Increase length of got_name
	buffer.
	* mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add a
	default return of FALSE.
	* mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc): Add a
	default return of FALSE.

binutils * dwarf.c (dwarf_vmatoa_1): Do not pass a NULL string pointer to
	sprintf.
	* srconv.c (walk_tree_type): Initialise the spare field of the
	IT_dty structure.

gas	* config/tc-pru.c (md_assemble): Add continue statement after
	handling 'E' operand character.
	* config/tc-v850.c (md_assemble): Initialise the 'insn' variable.

4 files changed, 33 insertions, 14 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 54aa1c7..a489357 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,15 @@
+2017-07-12  Nick Clifton  <nickc@redhat.com>
+
+	Fix compile time warnings using gcc 7.1.1.
+	* elf32-xtensa.c (elf_xtensa_get_plt_section): Increase length of
+	plt_name buffer.
+	(elf_xtensa_get_gotplt_section): Increase length of got_name
+	buffer.
+	* mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add a
+	default return of FALSE.
+	* mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc): Add a
+	default return of FALSE.
+
 2017-07-12  Alan Modra  <amodra@gmail.com>
 
 	* binary.c (binary_set_section_contents): Don't print filepos in
diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
index b3ddbf1..19a162e 100644
--- a/bfd/elf32-xtensa.c
+++ b/bfd/elf32-xtensa.c
@@ -10841,7 +10841,7 @@ static asection *
 elf_xtensa_get_plt_section (struct bfd_link_info *info, int chunk)
 {
   bfd *dynobj;
-  char plt_name[10];
+  char plt_name[17];
 
   if (chunk == 0)
     return elf_hash_table (info)->splt;
@@ -10856,7 +10856,7 @@ static asection *
 elf_xtensa_get_gotplt_section (struct bfd_link_info *info, int chunk)
 {
   bfd *dynobj;
-  char got_name[14];
+  char got_name[21];
 
   if (chunk == 0)
     return elf_hash_table (info)->sgotplt;
diff --git a/bfd/mach-o-arm.c b/bfd/mach-o-arm.c
index e731522..5139f79 100644
--- a/bfd/mach-o-arm.c
+++ b/bfd/mach-o-arm.c
@@ -150,7 +150,7 @@ static bfd_boolean
 bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
                                       struct mach_o_reloc_info_external *raw,
                                       arelent *res, asymbol **syms)
- {
+{
   bfd_mach_o_reloc_info reloc;
 
   if (!bfd_mach_o_pre_canonicalize_one_reloc (abfd, raw, &reloc, res, syms))
@@ -174,6 +174,7 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 	      return TRUE;
 	    }
           return FALSE;
+
         case BFD_MACH_O_ARM_RELOC_SECTDIFF:
           if (reloc.r_length == 2)
             {
@@ -186,6 +187,7 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 	      return TRUE;
             }
           return FALSE;
+
         case BFD_MACH_O_ARM_RELOC_LOCAL_SECTDIFF:
           if (reloc.r_length == 2)
             {
@@ -198,6 +200,7 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 	      return TRUE;
             }
           return FALSE;
+
 	case BFD_MACH_O_ARM_RELOC_HALF_SECTDIFF:
 	  switch (reloc.r_length)
 	    {
@@ -209,8 +212,9 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 	      return TRUE;
 	    }
 	  return FALSE;
+
         default:
-          return FALSE;
+          break;
         }
     }
   else
@@ -239,24 +243,23 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
               return FALSE;
             }
           break;
+
         case BFD_MACH_O_ARM_RELOC_BR24:
 	  if (reloc.r_length == 2 && reloc.r_pcrel == 1)
 	    {
               res->howto = &arm_howto_table[11];
               return TRUE;
 	    }
-	  else
-	    return FALSE;
 	  break;
+
         case BFD_MACH_O_THUMB_RELOC_BR22:
 	  if (reloc.r_length == 2 && reloc.r_pcrel == 1)
 	    {
               res->howto = &arm_howto_table[16];
               return TRUE;
 	    }
-	  else
-	    return FALSE;
 	  break;
+
         case BFD_MACH_O_ARM_RELOC_HALF:
 	  if (reloc.r_pcrel == 0)
 	    switch (reloc.r_length)
@@ -268,7 +271,8 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 		res->howto = &arm_howto_table[14];
 		return TRUE;
 	      }
-	  return FALSE;
+	  break;
+
         case BFD_MACH_O_ARM_RELOC_PAIR:
 	  if (res[-1].howto == &arm_howto_table[12]
 	      && reloc.r_length == 0)
@@ -290,11 +294,14 @@ bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
 	      res->address = res[-1].address;
 	      return TRUE;
             }
-          return FALSE;
+	  break;
+
         default:
-          return FALSE;
+	  break;
         }
     }
+
+  return FALSE;
 }
 
 static reloc_howto_type *
diff --git a/bfd/mach-o-i386.c b/bfd/mach-o-i386.c
index b2f0241..ce0389e 100644
--- a/bfd/mach-o-i386.c
+++ b/bfd/mach-o-i386.c
@@ -164,7 +164,7 @@ bfd_mach_o_i386_canonicalize_one_reloc (bfd *abfd,
             }
           return FALSE;
         default:
-          return FALSE;
+	  break;
         }
     }
   else
@@ -192,11 +192,11 @@ bfd_mach_o_i386_canonicalize_one_reloc (bfd *abfd,
             default:
               return FALSE;
             }
-          break;
         default:
-          return FALSE;
+          break;
         }
     }
+  return FALSE;
 }
 
 static bfd_boolean