Misplaced parenthesis calculates two too few bytes for string

[Alan Modra]

Factor out strlen.  Better code and this style is far less likely
to suffer from misplaced parens.
    
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 7b3a474..b883d3c 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2014-12-28  Alan Modra  <amodra@gmail.com>
+
+	PR 17766
+	* pei-x86_64.c (pex64_bfd_print_pdata_section): Correct string
+	length.  Use memcpy rather than strcpy.
+
 2014-12-26  Alan Modra  <amodra@gmail.com>
 
 	PR 17755
diff --git a/bfd/pei-x86_64.c b/bfd/pei-x86_64.c
index 51bf390..2009a29 100644
--- a/bfd/pei-x86_64.c
+++ b/bfd/pei-x86_64.c
@@ -601,11 +601,12 @@ pex64_bfd_print_pdata_section (bfd *abfd, void *vfile, asection *pdata_section)
      section name, replacing .pdata by .xdata prefix.  */
   if (strcmp (pdata_section->name, ".pdata") != 0)
     {
-      char *xdata_name = alloca (strlen (pdata_section->name + 1));
+      size_t len = strlen (pdata_section->name);
+      char *xdata_name = alloca (len + 1);
 
-      xdata_name = strcpy (xdata_name, pdata_section->name);
+      xdata_name = memcpy (xdata_name, pdata_section->name, len + 1);
       /* Transform .pdata prefix into .xdata prefix.  */
-      if (strlen (xdata_name) > 1)
+      if (len > 1)
 	xdata_name [1] = 'x';
       xdata_section = pex64_get_section_by_rva (abfd, xdata_base,
 						xdata_name);

-- 
Alan Modra
Australia Development Lab, IBM