--- old/src/share/vm/utilities/elfFile.cpp	Fri Oct 21 11:12:26 2011
+++ new/src/share/vm/utilities/elfFile.cpp	Fri Oct 21 11:12:26 2011
@@ -96,7 +96,7 @@
 
 bool ElfFile::load_tables() {
   assert(m_file, "file not open");
-  assert(m_status == Decoder::no_error, "already in error");
+  assert(!Decoder::is_error(m_status), "already in error");
 
   // read elf file header
   if (fread(&m_elfHdr, sizeof(m_elfHdr), 1, m_file) != 1) {
@@ -112,7 +112,7 @@
   // walk elf file's section headers, and load string tables
   Elf_Shdr shdr;
   if (!fseek(m_file, m_elfHdr.e_shoff, SEEK_SET)) {
-    if (m_status != Decoder::no_error) return false;
+    if (Decoder::is_error(m_status)) return false;
 
     for (int index = 0; index < m_elfHdr.e_shnum; index ++) {
       if (fread((void*)&shdr, sizeof(Elf_Shdr), 1, m_file) != 1) {
@@ -140,12 +140,11 @@
   return true;
 }
 
-const char* ElfFile::decode(address addr, int* offset) {
+bool ElfFile::decode(address addr, char* buf, int buflen, int* offset) {
   // something already went wrong, just give up
-  if (m_status != Decoder::no_error) {
-    return NULL;
+  if (Decoder::is_error(m_status)) {
+    return false;
   }
-
   ElfSymbolTable* symbol_table = m_symbol_tables;
   int string_table_index;
   int pos_in_string_table;
@@ -152,20 +151,22 @@
   int off = INT_MAX;
   bool found_symbol = false;
   while (symbol_table != NULL) {
-    if (Decoder::no_error == symbol_table->lookup(addr, &string_table_index, &pos_in_string_table, &off)) {
+    if (symbol_table->lookup(addr, &string_table_index, &pos_in_string_table, &off)) {
       found_symbol = true;
     }
     symbol_table = symbol_table->m_next;
   }
-  if (!found_symbol) return NULL;
+  if (!found_symbol) return false;
 
   ElfStringTable* string_table = get_string_table(string_table_index);
+
   if (string_table == NULL) {
     m_status = Decoder::file_invalid;
-    return NULL;
+    return false;
   }
   if (offset) *offset = off;
-  return string_table->string_at(pos_in_string_table);
+
+  return string_table->string_at(pos_in_string_table, buf, buflen);
 }