Added a #define of NULL to 0 to make NULL usable
in expressions.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@156514 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Expression/ExpressionSourceCode.cpp b/source/Expression/ExpressionSourceCode.cpp
index b1719b3..1d1c2f1 100644
--- a/source/Expression/ExpressionSourceCode.cpp
+++ b/source/Expression/ExpressionSourceCode.cpp
@@ -35,6 +35,8 @@
             break;
         case lldb::eLanguageTypeC:
             wrap_stream.Printf("%s                             \n"
+                               "#undef NULL                    \n"
+                               "#define NULL 0                 \n"
                                "typedef unsigned short unichar;\n"
                                "void                           \n"
                                "%s(void *$__lldb_arg)          \n"
@@ -47,6 +49,8 @@
             break;
         case lldb::eLanguageTypeC_plus_plus:
             wrap_stream.Printf("%s                                     \n"
+                               "#undef NULL                            \n"
+                               "#define NULL 0                         \n"
                                "typedef unsigned short unichar;        \n"
                                "void                                   \n"
                                "$__lldb_class::%s(void *$__lldb_arg) %s\n"
@@ -62,6 +66,8 @@
             if (static_method)
             {
                 wrap_stream.Printf("%s                                                      \n"
+                                    "#undef NULL                                            \n"
+                                    "#define NULL 0                                         \n"
                                     "typedef unsigned short unichar;                        \n"
                                     "@interface $__lldb_objc_class ($__lldb_category)       \n"
                                     "+(void)%s:(void *)$__lldb_arg;                         \n"
@@ -79,7 +85,9 @@
             }
             else
             {
-                wrap_stream.Printf("%s                                                      \n"
+                wrap_stream.Printf("%s                                                     \n"
+                                   "#undef NULL                                            \n"
+                                   "#define NULL 0                                         \n"
                                    "typedef unsigned short unichar;                        \n"
                                    "@interface $__lldb_objc_class ($__lldb_category)       \n"
                                    "-(void)%s:(void *)$__lldb_arg;                         \n"