Fixed issues with ptr_refs:

- If there is only 1 frame ptr_refs now works (fixed issue with stack detection)
- Fixed test for result now that it isn't a pointer anymore

llvm-svn: 198712

lldb/examples/darwin/heap_find/heap.py

@@ -154,6 +154,7 @@ if (KERN_SUCCESS == err)
 
         if options.search_stack:
             expr += '''
+#ifdef NUM_STACKS
 // Call the callback for the thread stack ranges
 for (uint32_t i=0; i<NUM_STACKS; ++i) {
     range_callback(task, &baton, 8, stacks[i].base, stacks[i].size);
@@ -161,13 +162,15 @@ for (uint32_t i=0; i<NUM_STACKS; ++i) {
         range_callback(task, &baton, 16, stacks[i].base - STACK_RED_ZONE_SIZE, STACK_RED_ZONE_SIZE);
     }
 }
-    '''
+#endif'''
     
         if options.search_segments:
             expr += '''
+#ifdef NUM_SEGMENTS
 // Call the callback for all segments
 for (uint32_t i=0; i<NUM_SEGMENTS; ++i)
-    range_callback(task, &baton, 32, segments[i].base, segments[i].size);'''
+    range_callback(task, &baton, 32, segments[i].base, segments[i].size);
+#endif'''
 
     if user_return_code:
         expr += "\n%s" % (user_return_code,)
@@ -447,7 +450,6 @@ def display_match_results (result, options, arg_str_description, expr, print_no_
         print "expression result:"
         print expr_sbvalue
     if expr_sbvalue.error.Success():
-        if expr_sbvalue.unsigned:
         match_value = lldb.value(expr_sbvalue)  
         i = 0
         match_idx = 0
@@ -572,8 +574,6 @@ def display_match_results (result, options, arg_str_description, expr, print_no_
                 elif options.stack:
                     dump_stack_history_entries(options, result, malloc_addr, 0)
         return i
-        elif print_no_matches:
-            result.AppendMessage('no matches found for %s' % (arg_str_description))
     else:
         result.AppendMessage(str(expr_sbvalue.error))
     return 0
@@ -871,7 +871,7 @@ stacks[%(index)u].base = 0x%(base)x;
 stacks[%(index)u].size = 0x%(size)x;''' % stack_dict
         return result
     else:
-        return None
+        return ''
 
 def get_sections_ranges_struct (process):
     '''Create code that defines a structure that represents all segments that
@@ -903,7 +903,7 @@ segments[%(index)u].base = 0x%(base)x;
 segments[%(index)u].size = 0x%(size)x;''' % segment_dict
         return result
     else:
-        return None
+        return ''
 
 def section_ptr_refs(debugger, command, result, dict):
     command_args = shlex.split(command)