gdbserver: cleanup in handle_v_run

After the previous commit there is now a redundant string copy in
handle_v_run, this commit cleans that up.

There should be no functional change after this commit.

During review I was pointed to this older series:

  https://inbox.sourceware.org/gdb-patches/20211022071933.3478427-1-m.weghorn@posteo.de/

which also includes this fix as part of a larger set of changes.  I'm
giving a Co-Authored-By credit to the author of that original series.
I believe this smaller fix brings some benefits on its own, though the
original series does offer additional improvements.  Once this is
merged I'll take a look at rebasing and resubmitting the original series.

Co-Authored-By: Michael Weghorn <m.weghorn@posteo.de>
Approved-By: Tom Tromey <tom@tromey.com>

1 files changed, 5 insertions, 19 deletions

diff --git a/gdbserver/server.cc b/gdbserver/server.cc
index 84b8712..e02cdb8 100644
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -2989,33 +2989,19 @@ handle_v_run (char *own_buf)
 	}
       else
 	{
+	  /* The length of the decoded argument.  */
 	  size_t len = (next_p - p) / 2;
-	  /* ARG is the unquoted argument received via the RSP.  */
+
+	  /* Buffer to decode the argument into.  */
 	  char *arg = (char *) xmalloc (len + 1);
-	  /* FULL_ARGS will contain the quoted version of ARG.  */
-	  char *full_arg = (char *) xmalloc ((len + 1) * 2);
-	  /* These are pointers used to navigate the strings above.  */
-	  char *tmp_arg = arg;
-	  char *tmp_full_arg = full_arg;
 
 	  hex2bin (p, (gdb_byte *) arg, len);
 	  arg[len] = '\0';
 
-	  while (*tmp_arg != '\0')
-	    {
-	      *tmp_full_arg = *tmp_arg;
-	      ++tmp_full_arg;
-	      ++tmp_arg;
-	    }
-
-	  /* Finish FULL_ARG and push it into the vector containing
-	     the argv.  */
-	  *tmp_full_arg = '\0';
 	  if (i == 0)
-	    new_program_name = full_arg;
+	    new_program_name = arg;
 	  else
-	    new_argv.push_back (full_arg);
-	  xfree (arg);
+	    new_argv.push_back (arg);
 	}
       if (*next_p == '\0')
 	break;