diff --git a/llvm/test/Transforms/InstCombine/wcslen-7.ll b/llvm/test/Transforms/InstCombine/wcslen-7.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/wcslen-7.ll
@@ -0,0 +1,23 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+;
+; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+
+declare i64 @wcslen(ptr)
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!llvm.module.flags = !{!0}
+
+@ws = constant [10 x i32] [i32 9, i32 8, i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0]
+
+
+; Fold wcslen(ws + 2) => 7.
+; FIXME: This fold is faulty, result should be 7 not 1.
+define dso_local i64 @fold_wcslen_1() {
+; CHECK-LABEL: @fold_wcslen_1(
+; CHECK-NEXT:    ret i64 1
+;
+  %ps3_pi = getelementptr inbounds [10 x i32], ptr @ws, i64 0, i64 2
+  %len = tail call i64 @wcslen(ptr %ps3_pi)
+  ret i64 %len
+}
+