[Lldb-commits] [lldb] r145840 - /lldb/trunk/source/API/SBCommandInterpreter.cpp

[Jim Ingham]

Author: jingham
Date: Mon Dec  5 13:24:15 2011
New Revision: 145840

URL: http://llvm.org/viewvc/llvm-project?rev=145840&view=rev
Log:
Sanity check the inputs to SBCommandInterpreter::HandleCompletion

Modified:
    lldb/trunk/source/API/SBCommandInterpreter.cpp

Modified: lldb/trunk/source/API/SBCommandInterpreter.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/API/SBCommandInterpreter.cpp?rev=145840&r1=145839&r2=145840&view=diff
==============================================================================
--- lldb/trunk/source/API/SBCommandInterpreter.cpp (original)
+++ lldb/trunk/source/API/SBCommandInterpreter.cpp Mon Dec  5 13:24:15 2011
@@ -124,6 +124,19 @@
                                         SBStringList &matches)
 {
     int num_completions = 0;
+    
+    // Sanity check the arguments that are passed in:
+    // cursor & last_char have to be within the current_line.
+    if (current_line == NULL || cursor == NULL || last_char == NULL)
+        return 0;
+    
+    if (cursor < current_line || last_char < current_line)
+        return 0;
+        
+    size_t current_line_size = strlen (current_line);
+    if (cursor - current_line > current_line_size || last_char - current_line > current_line_size)
+        return 0;
+        
     if (m_opaque_ptr)
     {
         lldb_private::StringList lldb_matches;