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-rw-r--r--test/Expr/Parser/Simplify.pc5
1 files changed, 5 insertions, 0 deletions
diff --git a/test/Expr/Parser/Simplify.pc b/test/Expr/Parser/Simplify.pc
index e89d79ff..1a853b16 100644
--- a/test/Expr/Parser/Simplify.pc
+++ b/test/Expr/Parser/Simplify.pc
@@ -33,3 +33,8 @@ array a[64] : w32 -> w8 = symbolic
 # RUN: grep                       \"(Not (Eq 1 (Read w8 1 a))))\" %t2
 (query [] false [(Not (Or (Eq 0 (Read w8 0 a))
                           (Eq 1 (Read w8 1 a))))])
+
+# Check -- false == X ==> !X
+# RUN: grep -A 2 \"# Query 7\" %t > %t2
+# RUN: grep \"(query .. false .(Not (Extract 1 (Read w8 0 a))).)\" %t2
+(query [] false [(Eq (Extract w1 1 (Read w8 0 a)) false)])