commit 8610681e4e9bbf658d6dd9ca907b406ef9f2cf46
author Sean Callanan <scallanan@apple.com> Sat Mar 10 03:03:46 2012 +0000
committer Sean Callanan <scallanan@apple.com> Sat Mar 10 03:03:46 2012 +0000
tree 006a48780b031e276b32d50da8475d06c6514a99
parent 30dad103fe1a9f79c63d78c2c6b288ee4994f006

Hardened the process of reading the program counter
on behalf of a DWARF expression.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@152477 91177308-0d34-0410-b5e6-96231b3b80d8

source/Expression/DWARFExpression.cpp

diff --git a/source/Expression/DWARFExpression.cpp b/source/Expression/DWARFExpression.cpp
index 88ce130..1ff6e8e 100644
--- a/source/Expression/DWARFExpression.cpp
+++ b/source/Expression/DWARFExpression.cpp
@@ -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)