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-rw-r--r--lib/Solver/Z3Builder.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Solver/Z3Builder.cpp b/lib/Solver/Z3Builder.cpp
index d03c4c89..06b995ae 100644
--- a/lib/Solver/Z3Builder.cpp
+++ b/lib/Solver/Z3Builder.cpp
@@ -24,8 +24,9 @@ using namespace klee;
 namespace {
 llvm::cl::opt<bool> UseConstructHashZ3(
     "use-construct-hash-z3",
-    llvm::cl::desc("Use hash-consing during Z3 query construction."),
-    llvm::cl::init(true));
+    llvm::cl::desc("Use hash-consing during Z3 query construction (default=true)"),
+    llvm::cl::init(true),
+    llvm::cl::cat(klee::ExprCat));
 
 // FIXME: This should be std::atomic<bool>. Need C++11 for that.
 bool Z3InterationLogOpen = false;