[Lldb-commits] [lldb] r152477 - /lldb/trunk/source/Expression/DWARFExpression.cpp

[Sean Callanan]

Author: spyffe
Date: Fri Mar  9 21:03:46 2012
New Revision: 152477

URL: http://llvm.org/viewvc/llvm-project?rev=152477&view=rev
Log:
Hardened the process of reading the program counter
on behalf of a DWARF expression.

Modified:
    lldb/trunk/source/Expression/DWARFExpression.cpp

Modified: lldb/trunk/source/Expression/DWARFExpression.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Expression/DWARFExpression.cpp?rev=152477&r1=152476&r2=152477&view=diff
==============================================================================
--- lldb/trunk/source/Expression/DWARFExpression.cpp (original)
+++ lldb/trunk/source/Expression/DWARFExpression.cpp Fri Mar  9 21:03:46 2012
@@ -1219,7 +1219,12 @@
         else
         {
             frame = exe_ctx->GetFramePtr();
-            pc = frame->GetRegisterContext()->GetPC();
+            if (!frame)
+                return false;
+            RegisterContextSP reg_ctx_sp = frame->GetRegisterContext();
+            if (!reg_ctx_sp)
+                return false;
+            pc = reg_ctx_sp->GetPC();
         }
 
         if (loclist_base_load_addr != LLDB_INVALID_ADDRESS)