Constify target name, reloc name, and carsym name

bfd/
	* bfd-in.h (carsym.name): Make const.
	* reloc.c (struct reloc_howto_struct.name): Likewise.
	* targets.c (bfd_target.name): Likewise.!
	* bfd.c (bfd_get_sign_extend_vma): Make variable const.
	* som.c (som_bfd_fill_in_ar_symbols): Use an intermediary variable
	when setting carsym.name.
	* bfd-in2.h: Regenerate.
gdb/
	* amd64-dicos-tdep.c (amd64_dicos_osabi_sniffer): Constify target.
	* i386-cygwin-tdep.c (i386_cygwin_init_abi): Likewise.
	* i386-dicos-tdep.c (i386_dicos_osabi_sniffer): Likewise.
ld/
	* ldlang.c (stricpy, strcut, name_compare): Constify params.
	(get_first_input_target): Make return and "target" const.

bfd/ChangeLog

@@ -1,3 +1,13 @@
+2019-09-18  Alan Modra  <amodra@gmail.com>
+
+	* bfd-in.h (carsym.name): Make const.
+	* reloc.c (struct reloc_howto_struct.name): Likewise.
+	* targets.c (bfd_target.name): Likewise.!
+	* bfd.c (bfd_get_sign_extend_vma): Make variable const.
+	* som.c (som_bfd_fill_in_ar_symbols): Use an intermediary variable
+	when setting carsym.name.
+	* bfd-in2.h: Regenerate.
+
 2019-09-18  Alan Modra  <amodra@gmail.com>
 
 	* mach-o.c (bfd_mach_o_fat_member_init): Likewise.  Replace

bfd/bfd-in.h

@@ -257,7 +257,7 @@ typedef unsigned long symindex;
 /* This is a type pun with struct ranlib on purpose!  */
 typedef struct carsym
 {
-  char *name;
+  const char *name;
   file_ptr file_offset;	/* Look here to find the file.  */
 }
 carsym;			/* To make these you call a carsymogen.  */

bfd/bfd-in2.h

@@ -264,7 +264,7 @@ typedef unsigned long symindex;
 /* This is a type pun with struct ranlib on purpose!  */
 typedef struct carsym
 {
-  char *name;
+  const char *name;
   file_ptr file_offset;	/* Look here to find the file.  */
 }
 carsym;			/* To make these you call a carsymogen.  */
@@ -2718,7 +2718,7 @@ struct reloc_howto_struct
      bfd *, char **);
 
   /* The textual name of the relocation type.  */
-  char *name;
+  const char *name;
 };
 
 #define HOWTO(type, right, size, bits, pcrel, left, ovf, func, name,   \
@@ -7634,7 +7634,7 @@ typedef struct flag_info flag_info;
 typedef struct bfd_target
 {
   /* Identifies the kind of target, e.g., SunOS4, Ultrix, etc.  */
-  char *name;
+  const char *name;
 
  /* The "flavour" of a back end is a general indication about
     the contents of a file.  */

bfd/bfd.c

@@ -1507,7 +1507,7 @@ RETURNS
 int
 bfd_get_sign_extend_vma (bfd *abfd)
 {
-  char *name;
+  const char *name;
 
   if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
     return get_elf_backend_data (abfd)->sign_extend_vma;

bfd/reloc.c

@@ -361,7 +361,7 @@ CODE_FRAGMENT
 .     bfd *, char **);
 .
 .  {* The textual name of the relocation type.  *}
-.  char *name;
+.  const char *name;
 .};
 .
 */

bfd/som.c

@@ -5995,6 +5995,7 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
       unsigned int hash_val;
       unsigned int len;
       unsigned char ext_len[4];
+      char *name;
 
       /* An empty chain has zero as it's file offset.  */
       hash_val = bfd_getb32 (hash_table + 4 * i);
@@ -6025,13 +6026,14 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
       len = bfd_getb32 (ext_len);
 
       /* Allocate space for the name and null terminate it too.  */
-      set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
+      name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
-      if (!set->name)
+      if (!name)
 	goto error_return;
-      if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
+      if (bfd_bread (name, (bfd_size_type) len, abfd) != len)
 	goto error_return;
 
-      set->name[len] = 0;
+      name[len] = 0;
+      set->name = name;
 
       /* Fill in the file offset.  Note that the "location" field points
 	 to the SOM itself, not the ar_hdr in front of it.  */
@@ -6068,13 +6070,14 @@ som_bfd_fill_in_ar_symbols (bfd *abfd,
 	  len = bfd_getb32 (ext_len);
 
 	  /* Allocate space for the name and null terminate it too.  */
-	  set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
+	  name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
-	  if (!set->name)
+	  if (!name)
 	    goto error_return;
 
-	  if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
+	  if (bfd_bread (name, (bfd_size_type) len, abfd) != len)
 	    goto error_return;
-	  set->name[len] = 0;
+	  name[len] = 0;
+	  set->name = name;
 
 	  /* Fill in the file offset.  Note that the "location" field points
 	     to the SOM itself, not the ar_hdr in front of it.  */

bfd/targets.c

@@ -179,7 +179,7 @@ DESCRIPTION
 .typedef struct bfd_target
 .{
 .  {* Identifies the kind of target, e.g., SunOS4, Ultrix, etc.  *}
-.  char *name;
+.  const char *name;
 .
 . {* The "flavour" of a back end is a general indication about
 .    the contents of a file.  *}

gdb/ChangeLog

@@ -1,3 +1,9 @@
+2019-09-18  Alan Modra  <amodra@gmail.com>
+
+	* amd64-dicos-tdep.c (amd64_dicos_osabi_sniffer): Constify target.
+	* i386-cygwin-tdep.c (i386_cygwin_init_abi): Likewise.
+	* i386-dicos-tdep.c (i386_dicos_osabi_sniffer): Likewise.
+
 2019-09-18  Alan Modra  <amodra@gmail.com>
 
 	* solib-spu.c (spu_bfd_open): Use bfd_set_filename.

gdb/amd64-dicos-tdep.c

@@ -35,7 +35,7 @@ amd64_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 static enum gdb_osabi
 amd64_dicos_osabi_sniffer (bfd *abfd)
 {
-  char *target_name = bfd_get_target (abfd);
+  const char *target_name = bfd_get_target (abfd);
 
   /* On amd64-DICOS, the Load Module's "header" section is 72
      bytes.  */

gdb/i386-cygwin-tdep.c

@@ -229,7 +229,7 @@ i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 static enum gdb_osabi
 i386_cygwin_osabi_sniffer (bfd *abfd)
 {
-  char *target_name = bfd_get_target (abfd);
+  const char *target_name = bfd_get_target (abfd);
 
   if (strcmp (target_name, "pei-i386") == 0)
     return GDB_OSABI_CYGWIN;

gdb/i386-dicos-tdep.c

@@ -31,7 +31,7 @@ i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 static enum gdb_osabi
 i386_dicos_osabi_sniffer (bfd *abfd)
 {
-  char *target_name = bfd_get_target (abfd);
+  const char *target_name = bfd_get_target (abfd);
 
   /* On x86-DICOS, the Load Module's "header" section is 36 bytes.  */
   if (strcmp (target_name, "elf32-i386") == 0

ld/ChangeLog

@@ -1,3 +1,8 @@
+2019-09-18  Alan Modra  <amodra@gmail.com>
+
+	* ldlang.c (stricpy, strcut, name_compare): Constify params.
+	(get_first_input_target): Make return and "target" const.
+
 2019-09-18  Alan Modra  <amodra@gmail.com>
 
 	* emultempl/pe.em (after_open): Use bfd_set_filename.

ld/ldlang.c

@@ -3149,7 +3149,7 @@ get_target (const bfd_target *target, void *data)
 /* Like strcpy() but convert to lower case as well.  */
 
 static void
-stricpy (char *dest, char *src)
+stricpy (char *dest, const char *src)
 {
   char c;
 
@@ -3163,7 +3163,7 @@ stricpy (char *dest, char *src)
    from haystack.  */
 
 static void
-strcut (char *haystack, char *needle)
+strcut (char *haystack, const char *needle)
 {
   haystack = strstr (haystack, needle);
 
@@ -3182,7 +3182,7 @@ strcut (char *haystack, char *needle)
    Return a value indicating how "similar" they are.  */
 
 static int
-name_compare (char *first, char *second)
+name_compare (const char *first, const char *second)
 {
   char *copy1;
   char *copy2;
@@ -3267,10 +3267,10 @@ closest_target_match (const bfd_target *target, void *data)
 
 /* Return the BFD target format of the first input file.  */
 
-static char *
+static const char *
 get_first_input_target (void)
 {
-  char *target = NULL;
+  const char *target = NULL;
 
   LANG_FOR_EACH_INPUT_STATEMENT (s)
     {