gdb: remove unnecessary local variable in pager_file::puts

The lineptr variable isn't really necessary, we can just keep using
linebuffer, since the original value is linebuffer isn't needed.  Remove
lineptr, and fix some comparisons to be explicit.

Change-Id: If2f7df43bf79efd40149e46d5c77f9bc0439f879
Approved-By: Tom Tromey <tom@tromey.com>

1 files changed, 15 insertions, 18 deletions

diff --git a/gdb/utils.c b/gdb/utils.c
index 9842bfc..3d216e1 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -1636,8 +1636,6 @@ begin_line (void)
 void
 pager_file::puts (const char *linebuffer)
 {
-  const char *lineptr;
-
   gdb_assert (linebuffer != nullptr);
 
   /* Don't do any filtering or wrapping if both are disabled.  */
@@ -1669,8 +1667,7 @@ pager_file::puts (const char *linebuffer)
      when this is necessary; prompt user for new page when this is
      necessary.  */
 
-  lineptr = linebuffer;
-  while (*lineptr)
+  while (*linebuffer != '\0')
     {
       /* Possible new page.  Note that PAGINATION_DISABLED_FOR_COMMAND
 	 might be set during this loop, so we must continue to check
@@ -1680,39 +1677,39 @@ pager_file::puts (const char *linebuffer)
 	  && lines_printed >= lines_allowed)
 	prompt_for_continue ();
 
-      while (*lineptr && *lineptr != '\n')
+      while (*linebuffer != '\0' && *linebuffer != '\n')
 	{
 	  int skip_bytes;
 
 	  /* Print a single line.  */
-	  if (*lineptr == '\t')
+	  if (*linebuffer == '\t')
 	    {
 	      m_wrap_buffer.push_back ('\t');
 	      /* Shifting right by 3 produces the number of tab stops
 		 we have already passed, and then adding one and
 		 shifting left 3 advances to the next tab stop.  */
 	      chars_printed = ((chars_printed >> 3) + 1) << 3;
-	      lineptr++;
+	      linebuffer++;
 	    }
-	  else if (*lineptr == '\033'
-		   && skip_ansi_escape (lineptr, &skip_bytes))
+	  else if (*linebuffer == '\033'
+		   && skip_ansi_escape (linebuffer, &skip_bytes))
 	    {
-	      m_wrap_buffer.append (lineptr, skip_bytes);
+	      m_wrap_buffer.append (linebuffer, skip_bytes);
 	      /* Note that we don't consider this a character, so we
 		 don't increment chars_printed here.  */
-	      lineptr += skip_bytes;
+	      linebuffer += skip_bytes;
 	    }
-	  else if (*lineptr == '\r')
+	  else if (*linebuffer == '\r')
 	    {
-	      m_wrap_buffer.push_back (*lineptr);
+	      m_wrap_buffer.push_back (*linebuffer);
 	      chars_printed = 0;
-	      lineptr++;
+	      linebuffer++;
 	    }
 	  else
 	    {
-	      m_wrap_buffer.push_back (*lineptr);
+	      m_wrap_buffer.push_back (*linebuffer);
 	      chars_printed++;
-	      lineptr++;
+	      linebuffer++;
 	    }
 
 	  if (chars_printed >= chars_per_line)
@@ -1786,13 +1783,13 @@ pager_file::puts (const char *linebuffer)
 	    }
 	}
 
-      if (*lineptr == '\n')
+      if (*linebuffer == '\n')
 	{
 	  chars_printed = 0;
 	  wrap_here (0); /* Spit out chars, cancel further wraps.  */
 	  lines_printed++;
 	  m_stream->puts ("\n");
-	  lineptr++;
+	  linebuffer++;
 	}
     }