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[binutils-gdb] -Wwrite-strings: Constify target_pid_to_str and target_thread_extra_thread_info


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7a1149643d8621541025e2c70e6391e901c8c7ef

commit 7a1149643d8621541025e2c70e6391e901c8c7ef
Author: Pedro Alves <palves@redhat.com>
Date:   Wed Apr 5 19:21:34 2017 +0100

    -Wwrite-strings: Constify target_pid_to_str and target_thread_extra_thread_info
    
    -Wwrite-strings flagged a missing cast for example here:
    
       static char *
       ravenscar_extra_thread_info (struct target_ops *self, struct thread_info *tp)
       {
         return "Ravenscar task";
    
    Since callers are not supposed to free the string returned by these
    methods, change the methods' signature to return const strings.
    
    gdb/ChangeLog:
    2017-04-05  Pedro Alves  <palves@redhat.com>
    
    	* aix-thread.c (aix_thread_pid_to_str)
    	(aix_thread_extra_thread_info): Constify.
    	* bsd-kvm.c (bsd_kvm_pid_to_str): Constify.
    	* bsd-uthread.c (bsd_uthread_extra_thread_info)
    	(bsd_uthread_pid_to_str): Constify.
    	* corelow.c (core_pid_to_str): Constify.
    	* darwin-nat.c (darwin_pid_to_str): Constify.
    	* fbsd-nat.c (fbsd_pid_to_str): Constify.
    	* fbsd-tdep.c (fbsd_core_pid_to_str, gdbarch_core_pid_to_str):
    	Constify.
    	* gnu-nat.c (gnu_pid_to_str): Constify.
    	* go32-nat.c (go32_pid_to_str): Constify.
    	* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Constify.
    	* inf-ptrace.c (inf_ptrace_pid_to_str): Constify.
    	* inferior.c (inferior_pid_to_str): Constify.
    	* linux-nat.c (linux_nat_pid_to_str): Constify.
    	* linux-tdep.c (linux_core_pid_to_str): Constify.
    	* linux-thread-db.c (thread_db_pid_to_str)
    	(thread_db_extra_thread_info): Constify.
    	* nto-tdep.c (nto_extra_thread_info): Constify.
    	* nto-tdep.h (nto_extra_thread_info): Constify.
    	* obsd-nat.c (obsd_pid_to_str): Constify.
    	* procfs.c (procfs_pid_to_str): Constify.
    	* ravenscar-thread.c (ravenscar_extra_thread_info)
    	(ravenscar_pid_to_str): Constify.
    	* remote-sim.c (gdbsim_pid_to_str): Constify.
    	* remote.c (remote_threads_extra_info, remote_pid_to_str):
    	Constify.
    	* sol-thread.c (solaris_pid_to_str): Constify.
    	* sol2-tdep.c (sol2_core_pid_to_str): Constify.
    	* sol2-tdep.h (sol2_core_pid_to_str): Constify.
    	* target.c (default_pid_to_str, target_pid_to_str)
    	(normal_pid_to_str, default_pid_to_str): Constify.
    	* target.h (target_ops::to_pid_to_str)
    	(target_ops::to_extra_thread_info): Constify.
    	(target_pid_to_str, normal_pid_to_str): Constify.
    	* windows-nat.c (windows_pid_to_str): Constify.
    	* gdbarch.sh (core_pid_to_str): Constify.
    	* target-delegates.c: Regenerate.
    	* gdbarch.h, gdbarch.c: Regenerate.

Diff:
---
 gdb/ChangeLog          | 43 +++++++++++++++++++++++++++++++++++++++++++
 gdb/aix-thread.c       |  4 ++--
 gdb/bsd-kvm.c          |  2 +-
 gdb/bsd-uthread.c      |  4 ++--
 gdb/corelow.c          |  2 +-
 gdb/darwin-nat.c       |  4 ++--
 gdb/fbsd-nat.c         |  2 +-
 gdb/fbsd-tdep.c        |  2 +-
 gdb/gdbarch.c          |  2 +-
 gdb/gdbarch.h          |  4 ++--
 gdb/gdbarch.sh         |  2 +-
 gdb/gnu-nat.c          |  2 +-
 gdb/go32-nat.c         |  2 +-
 gdb/i386-cygwin-tdep.c |  2 +-
 gdb/inf-ptrace.c       |  2 +-
 gdb/inferior.c         |  2 +-
 gdb/linux-nat.c        |  2 +-
 gdb/linux-tdep.c       |  2 +-
 gdb/linux-thread-db.c  |  4 ++--
 gdb/nto-tdep.c         |  2 +-
 gdb/nto-tdep.h         |  2 +-
 gdb/obsd-nat.c         |  2 +-
 gdb/procfs.c           |  4 ++--
 gdb/ravenscar-thread.c |  8 ++++----
 gdb/remote-sim.c       |  2 +-
 gdb/remote.c           |  4 ++--
 gdb/sol-thread.c       |  2 +-
 gdb/sol2-tdep.c        |  2 +-
 gdb/sol2-tdep.h        |  2 +-
 gdb/target-delegates.c | 18 +++++++++---------
 gdb/target.c           |  8 ++++----
 gdb/target.h           |  8 ++++----
 gdb/windows-nat.c      |  2 +-
 33 files changed, 99 insertions(+), 56 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f07927d..f021968 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,46 @@
+2017-04-05  Pedro Alves  <palves@redhat.com>
+
+	* aix-thread.c (aix_thread_pid_to_str)
+	(aix_thread_extra_thread_info): Constify.
+	* bsd-kvm.c (bsd_kvm_pid_to_str): Constify.
+	* bsd-uthread.c (bsd_uthread_extra_thread_info)
+	(bsd_uthread_pid_to_str): Constify.
+	* corelow.c (core_pid_to_str): Constify.
+	* darwin-nat.c (darwin_pid_to_str): Constify.
+	* fbsd-nat.c (fbsd_pid_to_str): Constify.
+	* fbsd-tdep.c (fbsd_core_pid_to_str, gdbarch_core_pid_to_str):
+	Constify.
+	* gnu-nat.c (gnu_pid_to_str): Constify.
+	* go32-nat.c (go32_pid_to_str): Constify.
+	* i386-cygwin-tdep.c (i386_windows_core_pid_to_str): Constify.
+	* inf-ptrace.c (inf_ptrace_pid_to_str): Constify.
+	* inferior.c (inferior_pid_to_str): Constify.
+	* linux-nat.c (linux_nat_pid_to_str): Constify.
+	* linux-tdep.c (linux_core_pid_to_str): Constify.
+	* linux-thread-db.c (thread_db_pid_to_str)
+	(thread_db_extra_thread_info): Constify.
+	* nto-tdep.c (nto_extra_thread_info): Constify.
+	* nto-tdep.h (nto_extra_thread_info): Constify.
+	* obsd-nat.c (obsd_pid_to_str): Constify.
+	* procfs.c (procfs_pid_to_str): Constify.
+	* ravenscar-thread.c (ravenscar_extra_thread_info)
+	(ravenscar_pid_to_str): Constify.
+	* remote-sim.c (gdbsim_pid_to_str): Constify.
+	* remote.c (remote_threads_extra_info, remote_pid_to_str):
+	Constify.
+	* sol-thread.c (solaris_pid_to_str): Constify.
+	* sol2-tdep.c (sol2_core_pid_to_str): Constify.
+	* sol2-tdep.h (sol2_core_pid_to_str): Constify.
+	* target.c (default_pid_to_str, target_pid_to_str)
+	(normal_pid_to_str, default_pid_to_str): Constify.
+	* target.h (target_ops::to_pid_to_str)
+	(target_ops::to_extra_thread_info): Constify.
+	(target_pid_to_str, normal_pid_to_str): Constify.
+	* windows-nat.c (windows_pid_to_str): Constify.
+	* gdbarch.sh (core_pid_to_str): Constify.
+	* target-delegates.c: Regenerate.
+	* gdbarch.h, gdbarch.c: Regenerate.
+
 2017-04-05  Pedro Alves	 <palves@redhat.com>
 
 	* main.c (captured_main_1): Use gdb::unique_xmalloc_ptr to manage
diff --git a/gdb/aix-thread.c b/gdb/aix-thread.c
index 3fbe96a..05024df 100644
--- a/gdb/aix-thread.c
+++ b/gdb/aix-thread.c
@@ -1725,7 +1725,7 @@ aix_thread_thread_alive (struct target_ops *ops, ptid_t ptid)
 /* Return a printable representation of composite PID for use in
    "info threads" output.  */
 
-static char *
+static const char *
 aix_thread_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char *ret = NULL;
@@ -1745,7 +1745,7 @@ aix_thread_pid_to_str (struct target_ops *ops, ptid_t ptid)
 /* Return a printable representation of extra information about
    THREAD, for use in "info threads" output.  */
 
-static char *
+static const char *
 aix_thread_extra_thread_info (struct target_ops *self,
 			      struct thread_info *thread)
 {
diff --git a/gdb/bsd-kvm.c b/gdb/bsd-kvm.c
index 9f4f9e7..98e2428 100644
--- a/gdb/bsd-kvm.c
+++ b/gdb/bsd-kvm.c
@@ -329,7 +329,7 @@ bsd_kvm_thread_alive (struct target_ops *ops,
   return 1;
 }
 
-static char *
+static const char *
 bsd_kvm_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[64];
diff --git a/gdb/bsd-uthread.c b/gdb/bsd-uthread.c
index 08b8f36..5d4775c 100644
--- a/gdb/bsd-uthread.c
+++ b/gdb/bsd-uthread.c
@@ -491,7 +491,7 @@ static char *bsd_uthread_state[] =
 /* Return a string describing th state of the thread specified by
    INFO.  */
 
-static char *
+static const char *
 bsd_uthread_extra_thread_info (struct target_ops *self,
 			       struct thread_info *info)
 {
@@ -511,7 +511,7 @@ bsd_uthread_extra_thread_info (struct target_ops *self,
   return NULL;
 }
 
-static char *
+static const char *
 bsd_uthread_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   if (ptid_get_tid (ptid) != 0)
diff --git a/gdb/corelow.c b/gdb/corelow.c
index 656c754..3267c37 100644
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
@@ -965,7 +965,7 @@ core_read_description (struct target_ops *target)
   return target->beneath->to_read_description (target->beneath);
 }
 
-static char *
+static const char *
 core_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[64];
diff --git a/gdb/darwin-nat.c b/gdb/darwin-nat.c
index edee1be..e509240 100644
--- a/gdb/darwin-nat.c
+++ b/gdb/darwin-nat.c
@@ -107,7 +107,7 @@ static void darwin_create_inferior (struct target_ops *ops, char *exec_file,
 
 static void darwin_files_info (struct target_ops *ops);
 
-static char *darwin_pid_to_str (struct target_ops *ops, ptid_t tpid);
+static const char *darwin_pid_to_str (struct target_ops *ops, ptid_t tpid);
 
 static int darwin_thread_alive (struct target_ops *ops, ptid_t tpid);
 
@@ -1970,7 +1970,7 @@ darwin_files_info (struct target_ops *ops)
 {
 }
 
-static char *
+static const char *
 darwin_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
index 25952c3..5c4408b 100644
--- a/gdb/fbsd-nat.c
+++ b/gdb/fbsd-nat.c
@@ -368,7 +368,7 @@ fbsd_thread_alive (struct target_ops *ops, ptid_t ptid)
 /* Convert PTID to a string.  Returns the string in a static
    buffer.  */
 
-static char *
+static const char *
 fbsd_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   lwpid_t lwp;
diff --git a/gdb/fbsd-tdep.c b/gdb/fbsd-tdep.c
index 46875d8..b834ce3 100644
--- a/gdb/fbsd-tdep.c
+++ b/gdb/fbsd-tdep.c
@@ -32,7 +32,7 @@
 
 /* This is how we want PTIDs from core files to be printed.  */
 
-static char *
+static const char *
 fbsd_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 87eafb2..6debb10 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -3691,7 +3691,7 @@ gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch)
   return gdbarch->core_pid_to_str != NULL;
 }
 
-char *
+const char *
 gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
 {
   gdb_assert (gdbarch != NULL);
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 34f82a7..3264c44 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -906,8 +906,8 @@ extern void set_gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch,
 
 extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch);
 
-typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
-extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
+typedef const char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
+extern const char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
 extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str);
 
 /* How the core target extracts the name of a thread from a core file. */
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index 39b1f94..c471b73 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -745,7 +745,7 @@ M:ULONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, ULONGE
 M:ULONGEST:core_xfer_shared_libraries_aix:gdb_byte *readbuf, ULONGEST offset, ULONGEST len:readbuf, offset, len
 
 # How the core target converts a PTID from a core file to a string.
-M:char *:core_pid_to_str:ptid_t ptid:ptid
+M:const char *:core_pid_to_str:ptid_t ptid:ptid
 
 # How the core target extracts the name of a thread from a core file.
 M:const char *:core_thread_name:struct thread_info *thr:thr
diff --git a/gdb/gnu-nat.c b/gdb/gnu-nat.c
index 7efb3c1..b2a975d 100644
--- a/gdb/gnu-nat.c
+++ b/gdb/gnu-nat.c
@@ -2652,7 +2652,7 @@ proc_string (struct proc *proc)
   return tid_str;
 }
 
-static char *
+static const char *
 gnu_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   struct inf *inf = gnu_current_inf;
diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c
index 1fca8e2..d2d8d7a 100644
--- a/gdb/go32-nat.c
+++ b/gdb/go32-nat.c
@@ -941,7 +941,7 @@ go32_thread_alive (struct target_ops *ops, ptid_t ptid)
   return !ptid_equal (ptid, null_ptid);
 }
 
-static char *
+static const char *
 go32_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   return normal_pid_to_str (ptid);
diff --git a/gdb/i386-cygwin-tdep.c b/gdb/i386-cygwin-tdep.c
index f200d39..c8139ff 100644
--- a/gdb/i386-cygwin-tdep.c
+++ b/gdb/i386-cygwin-tdep.c
@@ -178,7 +178,7 @@ windows_core_xfer_shared_libraries (struct gdbarch *gdbarch,
 
 /* This is how we want PTIDs from core files to be printed.  */
 
-static char *
+static const char *
 i386_windows_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/inf-ptrace.c b/gdb/inf-ptrace.c
index f912d28..c911001 100644
--- a/gdb/inf-ptrace.c
+++ b/gdb/inf-ptrace.c
@@ -619,7 +619,7 @@ inf_ptrace_files_info (struct target_ops *ignore)
 		   target_pid_to_str (inferior_ptid));
 }
 
-static char *
+static const char *
 inf_ptrace_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   return normal_pid_to_str (ptid);
diff --git a/gdb/inferior.c b/gdb/inferior.c
index c4ab6d7..4ae265e 100644
--- a/gdb/inferior.c
+++ b/gdb/inferior.c
@@ -542,7 +542,7 @@ number_of_inferiors (void)
 /* Converts an inferior process id to a string.  Like
    target_pid_to_str, but special cases the null process.  */
 
-static char *
+static const char *
 inferior_pid_to_str (int pid)
 {
   if (pid != 0)
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index dff0da5..b06e400 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -3940,7 +3940,7 @@ linux_nat_update_thread_list (struct target_ops *ops)
     }
 }
 
-static char *
+static const char *
 linux_nat_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[64];
diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 1a3e48d..016aadf 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -407,7 +407,7 @@ linux_has_shared_address_space (struct gdbarch *gdbarch)
 
 /* This is how we want PTIDs from core files to be printed.  */
 
-static char *
+static const char *
 linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index b131fc2..0e2607b 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -1372,7 +1372,7 @@ thread_db_update_thread_list (struct target_ops *ops)
   ops->beneath->to_update_thread_list (ops->beneath);
 }
 
-static char *
+static const char *
 thread_db_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   struct thread_info *thread_info = find_thread_ptid (ptid);
@@ -1397,7 +1397,7 @@ thread_db_pid_to_str (struct target_ops *ops, ptid_t ptid)
 /* Return a string describing the state of the thread specified by
    INFO.  */
 
-static char *
+static const char *
 thread_db_extra_thread_info (struct target_ops *self,
 			     struct thread_info *info)
 {
diff --git a/gdb/nto-tdep.c b/gdb/nto-tdep.c
index 96a3af3..04ad06c 100644
--- a/gdb/nto-tdep.c
+++ b/gdb/nto-tdep.c
@@ -408,7 +408,7 @@ static const char *nto_thread_state_str[] =
   "NET_REPLY"	/* 20 0x14 */
 };
 
-char *
+const char *
 nto_extra_thread_info (struct target_ops *self, struct thread_info *ti)
 {
   if (ti && ti->priv
diff --git a/gdb/nto-tdep.h b/gdb/nto-tdep.h
index 457bbc9..afe3452 100644
--- a/gdb/nto-tdep.h
+++ b/gdb/nto-tdep.h
@@ -176,7 +176,7 @@ void nto_dummy_supply_regset (struct regcache *regcache, char *regs);
 
 int nto_in_dynsym_resolve_code (CORE_ADDR pc);
 
-char *nto_extra_thread_info (struct target_ops *self, struct thread_info *);
+const char *nto_extra_thread_info (struct target_ops *self, struct thread_info *);
 
 LONGEST nto_read_auxv_from_initial_stack (CORE_ADDR inital_stack,
 					  gdb_byte *readbuf,
diff --git a/gdb/obsd-nat.c b/gdb/obsd-nat.c
index 3a73cbd..e2336a0 100644
--- a/gdb/obsd-nat.c
+++ b/gdb/obsd-nat.c
@@ -35,7 +35,7 @@
 
 #ifdef PT_GET_THREAD_FIRST
 
-static char *
+static const char *
 obsd_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   if (ptid_get_lwp (ptid) != 0)
diff --git a/gdb/procfs.c b/gdb/procfs.c
index b860f16..71d4b64 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -135,7 +135,7 @@ static target_xfer_partial_ftype procfs_xfer_partial;
 static int procfs_thread_alive (struct target_ops *ops, ptid_t);
 
 static void procfs_update_thread_list (struct target_ops *ops);
-static char *procfs_pid_to_str (struct target_ops *, ptid_t);
+static const char *procfs_pid_to_str (struct target_ops *, ptid_t);
 
 static int proc_find_memory_regions (struct target_ops *self,
 				     find_memory_region_ftype, void *);
@@ -4691,7 +4691,7 @@ procfs_thread_alive (struct target_ops *ops, ptid_t ptid)
 /* Convert PTID to a string.  Returns the string in a static
    buffer.  */
 
-static char *
+static const char *
 procfs_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/ravenscar-thread.c b/gdb/ravenscar-thread.c
index d1bd97f..1f89ea2 100644
--- a/gdb/ravenscar-thread.c
+++ b/gdb/ravenscar-thread.c
@@ -54,8 +54,8 @@ static const char ravenscar_runtime_initializer[] =
 
 static void ravenscar_update_thread_list (struct target_ops *ops);
 static ptid_t ravenscar_running_thread (void);
-static char *ravenscar_extra_thread_info (struct target_ops *self,
-					  struct thread_info *tp);
+static const char *ravenscar_extra_thread_info (struct target_ops *self,
+						struct thread_info *tp);
 static int ravenscar_thread_alive (struct target_ops *ops, ptid_t ptid);
 static void ravenscar_fetch_registers (struct target_ops *ops,
                                        struct regcache *regcache, int regnum);
@@ -241,7 +241,7 @@ ravenscar_running_thread (void)
     return ptid_build (ptid_get_pid (base_ptid), 0, tid);
 }
 
-static char *
+static const char *
 ravenscar_extra_thread_info (struct target_ops *self, struct thread_info *tp)
 {
   return "Ravenscar task";
@@ -254,7 +254,7 @@ ravenscar_thread_alive (struct target_ops *ops, ptid_t ptid)
   return 1;
 }
 
-static char *
+static const char *
 ravenscar_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[30];
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index 0e8d657..4396d4b 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -1270,7 +1270,7 @@ gdbsim_thread_alive (struct target_ops *ops, ptid_t ptid)
 /* Convert a thread ID to a string.  Returns the string in a static
    buffer.  */
 
-static char *
+static const char *
 gdbsim_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   return normal_pid_to_str (ptid);
diff --git a/gdb/remote.c b/gdb/remote.c
index 73a2e51..30cd47a 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -3354,7 +3354,7 @@ remote_update_thread_list (struct target_ops *ops)
  * Optional: targets are not required to implement this function.
  */
 
-static char *
+static const char *
 remote_threads_extra_info (struct target_ops *self, struct thread_info *tp)
 {
   struct remote_state *rs = get_remote_state ();
@@ -10946,7 +10946,7 @@ init_remote_threadtests (void)
 /* Convert a thread ID to a string.  Returns the string in a static
    buffer.  */
 
-static char *
+static const char *
 remote_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[64];
diff --git a/gdb/sol-thread.c b/gdb/sol-thread.c
index 7c1620a..39dae86 100644
--- a/gdb/sol-thread.c
+++ b/gdb/sol-thread.c
@@ -1021,7 +1021,7 @@ ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid,
 
 /* Convert PTID to printable form.  */
 
-static char *
+static const char *
 solaris_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[100];
diff --git a/gdb/sol2-tdep.c b/gdb/sol2-tdep.c
index 89eda53..7a06aa7 100644
--- a/gdb/sol2-tdep.c
+++ b/gdb/sol2-tdep.c
@@ -40,7 +40,7 @@ sol2_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
 /* This is how we want PTIDs from Solaris core files to be
    printed.  */
 
-char *
+const char *
 sol2_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
 {
   static char buf[80];
diff --git a/gdb/sol2-tdep.h b/gdb/sol2-tdep.h
index d2382e3..56dd898 100644
--- a/gdb/sol2-tdep.h
+++ b/gdb/sol2-tdep.h
@@ -24,6 +24,6 @@ struct gdbarch;
 
 CORE_ADDR sol2_skip_solib_resolver (struct gdbarch *, CORE_ADDR);
 
-char *sol2_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
+const char *sol2_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
 
 #endif /* sol2-tdep.h */
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 470b7e4..88e3e0b 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -1502,17 +1502,17 @@ debug_update_thread_list (struct target_ops *self)
   fputs_unfiltered (")\n", gdb_stdlog);
 }
 
-static char *
+static const char *
 delegate_pid_to_str (struct target_ops *self, ptid_t arg1)
 {
   self = self->beneath;
   return self->to_pid_to_str (self, arg1);
 }
 
-static char *
+static const char *
 debug_pid_to_str (struct target_ops *self, ptid_t arg1)
 {
-  char * result;
+  const char * result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_pid_to_str (...)\n", debug_target.to_shortname);
   result = debug_target.to_pid_to_str (&debug_target, arg1);
   fprintf_unfiltered (gdb_stdlog, "<- %s->to_pid_to_str (", debug_target.to_shortname);
@@ -1520,28 +1520,28 @@ debug_pid_to_str (struct target_ops *self, ptid_t arg1)
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_ptid_t (arg1);
   fputs_unfiltered (") = ", gdb_stdlog);
-  target_debug_print_char_p (result);
+  target_debug_print_const_char_p (result);
   fputs_unfiltered ("\n", gdb_stdlog);
   return result;
 }
 
-static char *
+static const char *
 delegate_extra_thread_info (struct target_ops *self, struct thread_info *arg1)
 {
   self = self->beneath;
   return self->to_extra_thread_info (self, arg1);
 }
 
-static char *
+static const char *
 tdefault_extra_thread_info (struct target_ops *self, struct thread_info *arg1)
 {
   return NULL;
 }
 
-static char *
+static const char *
 debug_extra_thread_info (struct target_ops *self, struct thread_info *arg1)
 {
-  char * result;
+  const char * result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_extra_thread_info (...)\n", debug_target.to_shortname);
   result = debug_target.to_extra_thread_info (&debug_target, arg1);
   fprintf_unfiltered (gdb_stdlog, "<- %s->to_extra_thread_info (", debug_target.to_shortname);
@@ -1549,7 +1549,7 @@ debug_extra_thread_info (struct target_ops *self, struct thread_info *arg1)
   fputs_unfiltered (", ", gdb_stdlog);
   target_debug_print_struct_thread_info_p (arg1);
   fputs_unfiltered (") = ", gdb_stdlog);
-  target_debug_print_char_p (result);
+  target_debug_print_const_char_p (result);
   fputs_unfiltered ("\n", gdb_stdlog);
   return result;
 }
diff --git a/gdb/target.c b/gdb/target.c
index 7c286ab..fd9181e 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -103,7 +103,7 @@ static int dummy_find_memory_regions (struct target_ops *self,
 static char *dummy_make_corefile_notes (struct target_ops *self,
 					bfd *ignore1, int *ignore2);
 
-static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid);
+static const char *default_pid_to_str (struct target_ops *ops, ptid_t ptid);
 
 static enum exec_direction_kind default_execution_direction
     (struct target_ops *self);
@@ -2303,7 +2303,7 @@ default_target_wait (struct target_ops *ops,
   return minus_one_ptid;
 }
 
-char *
+const char *
 target_pid_to_str (ptid_t ptid)
 {
   return (*current_target.to_pid_to_str) (&current_target, ptid);
@@ -3344,7 +3344,7 @@ generic_mourn_inferior (void)
 /* Convert a normal process ID to a string.  Returns the string in a
    static buffer.  */
 
-char *
+const char *
 normal_pid_to_str (ptid_t ptid)
 {
   static char buf[32];
@@ -3353,7 +3353,7 @@ normal_pid_to_str (ptid_t ptid)
   return buf;
 }
 
-static char *
+static const char *
 default_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   return normal_pid_to_str (ptid);
diff --git a/gdb/target.h b/gdb/target.h
index 943a0e2..6553f49 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -639,9 +639,9 @@ struct target_ops
       TARGET_DEFAULT_RETURN (0);
     void (*to_update_thread_list) (struct target_ops *)
       TARGET_DEFAULT_IGNORE ();
-    char *(*to_pid_to_str) (struct target_ops *, ptid_t)
+    const char *(*to_pid_to_str) (struct target_ops *, ptid_t)
       TARGET_DEFAULT_FUNC (default_pid_to_str);
-    char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
+    const char *(*to_extra_thread_info) (struct target_ops *, struct thread_info *)
       TARGET_DEFAULT_RETURN (NULL);
     const char *(*to_thread_name) (struct target_ops *, struct thread_info *)
       TARGET_DEFAULT_RETURN (NULL);
@@ -1851,9 +1851,9 @@ extern int target_is_non_stop_p (void);
    `process xyz', but on some systems it may contain
    `process xyz thread abc'.  */
 
-extern char *target_pid_to_str (ptid_t ptid);
+extern const char *target_pid_to_str (ptid_t ptid);
 
-extern char *normal_pid_to_str (ptid_t ptid);
+extern const char *normal_pid_to_str (ptid_t ptid);
 
 /* Return a short string describing extra information about PID,
    e.g. "sleeping", "runnable", "running on LWP 3".  Null return value
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 76313db..85f2030 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -2807,7 +2807,7 @@ windows_close (struct target_ops *self)
 }
 
 /* Convert pid to printable format.  */
-static char *
+static const char *
 windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
 {
   static char buf[80];


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