add a fixme.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73939 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/RegionStore.cpp b/lib/Analysis/RegionStore.cpp
index 427c231..4b598a3 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -1171,6 +1171,8 @@
     // There may be fewer values than fields only when we are initializing a
     // struct decl. In this case, mark the region as having default value.
     if (VI == VE) {
+      // FIXME: We should bind signed/unsigned 0 according to the sign of the
+      // field type.
       const NonLoc& Idx = NonLoc::MakeIntVal(getBasicVals(), 0, false);
       state = state->set<RegionDefaultValue>(R, Idx);
       break;