commit f65e204425b5b46a5927d9501c42f25d98a866ce
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date:   Tue Jun 13 15:20:32 2017 +0200

    write_pieced_value: Notify memory_changed observers
    
    So far write_pieced_value uses write_memory when writing memory pieces to
    the target.  However, this is a case where GDB potentially overwrites a
    watchpoint value.  In such a case write_memory_with_notification should be
    used instead, so that memory_changed observers get notified.
    
    gdb/ChangeLog:
    
            * dwarf2loc.c (write_pieced_value): When writing the data for a
            memory piece, use write_memory_with_notification instead of
            write_memory.

### a/gdb/ChangeLog
### b/gdb/ChangeLog
## -1,5 +1,11 @@
 2017-06-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>
 
+	* dwarf2loc.c (write_pieced_value): When writing the data for a
+	memory piece, use write_memory_with_notification instead of
+	write_memory.
+
+2017-06-13  Andreas Arnez  <arnez@linux.vnet.ibm.com>
+
 	* valops.c (read_value_memory): Change embedded_offset to
 	represent a bit offset instead of a byte offset.
 	* value.h (read_value_memory): Adjust comment.
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -2025,9 +2025,9 @@ write_pieced_value (struct value *to, struct value *from)
 		&& offset % 8 == 0)
 	      {
 		/* Everything is byte-aligned; no buffer needed.  */
-		write_memory (start_addr,
-			      contents + offset / 8,
-			      this_size_bits / 8);
+		write_memory_with_notification (start_addr,
+						contents + offset / 8,
+						this_size_bits / 8);
 		break;
 	      }
 
@@ -2054,7 +2054,8 @@ write_pieced_value (struct value *to, struct value *from)
 	    copy_bitwise (buffer.data (), bits_to_skip % 8,
 			  contents, offset,
 			  this_size_bits, bits_big_endian);
-	    write_memory (start_addr, buffer.data (), this_size);
+	    write_memory_with_notification (start_addr, buffer.data (),
+					    this_size);
 	  }
 	  break;
 	default: