6375 Add native name demangling support
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>

*** 20,33 ****
   */
  
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * All routines in this file are for processing new-style, *versioned*
   * mon.out format. Together with rdelf.c, lookup.c and profv.h, these
   * form the complete set of files to profile new-style mon.out files.
   */
--- 20,33 ----
   */
  
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  *
+  * Copyright 2018, Joyent, Inc.
   */
  
  /*
   * All routines in this file are for processing new-style, *versioned*
   * mon.out format. Together with rdelf.c, lookup.c and profv.h, these
   * form the complete set of files to profile new-style mon.out files.
   */
*** 72,82 ****
  
          nbp = namebuf;
          nbe = namebuf + namebuf_sz;
  
          for (i = 0; i < total_funcs; i++) {
!                 if ((p = conv_demangle_name(profsym[i].name)) == NULL)
                          continue;
  
                  namelen = strlen(p);
                  if ((nbp + namelen + 1) > nbe) {
                          namebuf_sz += BUCKET_SZ;
--- 72,83 ----
  
          nbp = namebuf;
          nbe = namebuf + namebuf_sz;
  
          for (i = 0; i < total_funcs; i++) {
!                 p = conv_demangle_name(profsym[i].name);
!                 if (p == profsym[i].name)
                          continue;
  
                  namelen = strlen(p);
                  if ((nbp + namelen + 1) > nbe) {
                          namebuf_sz += BUCKET_SZ;
*** 95,104 ****
--- 96,106 ----
                  (void) strcpy(nbp, p);
                  profsym[i].demangled_name = nbp;
  
                  nbp += namelen + 1;
                  cur_len += namelen + 1;
+                 free((void *)p);
          }
  }
  
  int
  cmp_by_time(const void *arg1, const void *arg2)