Author: jingham
Date: Thu Mar 20 12:13:28 2014
New Revision: 204359
URL: http://llvm.org/viewvc/llvm-project?rev=204359&view=rev
Log:
Guard against reading from host address of 0 in getting the data from a Value.
Modified:
lldb/trunk/source/Core/Value.cpp
Modified: lldb/trunk/source/Core/Value.cpp
URL:
http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Core/Value.cpp?rev=204359&r1=204358&r2=204359&view=diff
==============================================================================
--- lldb/trunk/source/Core/Value.cpp (original)
+++ lldb/trunk/source/Core/Value.cpp Thu Mar 20 12:13:28 2014
@@ -579,7 +579,12 @@ Value::GetValueAsData (ExecutionContext
{
if (address_type == eAddressTypeHost)
{
- // The address is an address in this process, so just copy it
+ // The address is an address in this process, so just copy it.
+ if (address == 0)
+ {
+ error.SetErrorStringWithFormat("trying to read from host
address of 0.");
+ return error;
+ }
memcpy (dst, (uint8_t*)NULL + address, byte_size);
}
else if ((address_type == eAddressTypeLoad) || (address_type ==
eAddressTypeFile))
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