[RFC 4/9] don't let hexify call strlen

[Tom Tromey <tromey@redhat.com>]

hexify had the same issue as bin2hex; and the fix is the same.

2014-01-20  Tom Tromey  <tromey@redhat.com>

	* common/rsp-low.c (hexify): Never take strlen of argument.

2014-01-20  Tom Tromey  <tromey@redhat.com>

	* remote-utils.c (monitor_output): Pass explicit length to
	hexify.
---
 gdb/ChangeLog                | 4 ++++
 gdb/common/rsp-low.c         | 4 ----
 gdb/gdbserver/ChangeLog      | 5 +++++
 gdb/gdbserver/remote-utils.c | 5 +++--
 4 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/gdb/common/rsp-low.c b/gdb/common/rsp-low.c
index 9c5119b..feb6d0c 100644
--- a/gdb/common/rsp-low.c
+++ b/gdb/common/rsp-low.c
@@ -177,10 +177,6 @@ hexify (char *hex, const char *bin, int count)
 {
   int i;
 
-  /* May use a length, or a nul-terminated string as input. */
-  if (count == 0)
-    count = strlen (bin);
-
   for (i = 0; i < count; i++)
     {
       *hex++ = tohex ((*bin >> 4) & 0xf);
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index 710d398..b2a84c3 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -1558,10 +1558,11 @@ relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc)
 void
 monitor_output (const char *msg)
 {
-  char *buf = xmalloc (strlen (msg) * 2 + 2);
+  int len = strlen (msg);
+  char *buf = xmalloc (len * 2 + 2);
 
   buf[0] = 'O';
-  hexify (buf + 1, msg, 0);
+  hexify (buf + 1, msg, len);
 
   putpkt (buf);
   free (buf);
-- 
1.8.1.4