[binutils-gdb] Make windows_thread_info::name a unique_xmalloc_ptr

[binutils-gdb] Make windows_thread_info::name a unique_xmalloc_ptr

[Tom Tromey]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2950fdf7423a404f6ebc691606d04917fd68228a

commit 2950fdf7423a404f6ebc691606d04917fd68228a
Author: Tom Tromey <tromey@adacore.com>
Date:   Wed Apr 8 14:33:35 2020 -0600

    Make windows_thread_info::name a unique_xmalloc_ptr
    
    This changes windows_thread_info::name to be a unique_xmalloc_ptr,
    removing some manual memory management.
    
    gdb/ChangeLog
    2020-04-08  Tom Tromey  <tromey@adacore.com>
    
            * windows-nat.c (handle_exception)
            (windows_nat_target::thread_name): Update.
            * nat/windows-nat.h (windows_thread_info): Remove destructor.
            <name>: Now unique_xmalloc_ptr.

Diff:
---
 gdb/ChangeLog         | 7 +++++++
 gdb/nat/windows-nat.h | 7 +------
 gdb/windows-nat.c     | 5 ++---
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6fce48c09a0..a7ffec78764 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2020-04-08  Tom Tromey  <tromey@adacore.com>
+
+	* windows-nat.c (handle_exception)
+	(windows_nat_target::thread_name): Update.
+	* nat/windows-nat.h (windows_thread_info): Remove destructor.
+	<name>: Now unique_xmalloc_ptr.
+
 2020-04-08  Tom Tromey  <tromey@adacore.com>
 
 	* windows-nat.c (thread_rec)
diff --git a/gdb/nat/windows-nat.h b/gdb/nat/windows-nat.h
index 27fd7ed19da..543de895e77 100644
--- a/gdb/nat/windows-nat.h
+++ b/gdb/nat/windows-nat.h
@@ -32,11 +32,6 @@ struct windows_thread_info
   {
   }
 
-  ~windows_thread_info ()
-  {
-    xfree (name);
-  }
-
   DISABLE_COPY_AND_ASSIGN (windows_thread_info);
 
   /* The Win32 thread identifier.  */
@@ -77,7 +72,7 @@ struct windows_thread_info
   bool reload_context = false;
 
   /* The name of the thread, allocated by xmalloc.  */
-  char *name = nullptr;
+  gdb::unique_xmalloc_ptr<char> name;
 };
 
 #endif
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index b7f21cb741d..7fbc9a4d27d 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -1414,8 +1414,7 @@ handle_exception (struct target_waitstatus *ourstatus)
 	      if (thread_name_len > 0)
 		{
 		  thread_name.get ()[thread_name_len - 1] = '\0';
-		  xfree (named_thread->name);
-		  named_thread->name = thread_name.release ();
+		  named_thread->name = std::move (thread_name);
 		}
 	    }
 	  ourstatus->value.sig = GDB_SIGNAL_TRAP;
@@ -3394,7 +3393,7 @@ windows_nat_target::get_ada_task_ptid (long lwp, long thread)
 const char *
 windows_nat_target::thread_name (struct thread_info *thr)
 {
-  return thread_rec (thr->ptid.tid (), 0)->name;
+  return thread_rec (thr->ptid.tid (), 0)->name.get ();
 }