1 files changed, 33 insertions, 0 deletions
diff --git a/test/Replay/libkleeruntest/replay_detection.c b/test/Replay/libkleeruntest/replay_detection.c
new file mode 100644
index 00000000..7516ecd1
--- /dev/null
+++ b/test/Replay/libkleeruntest/replay_detection.c
@@ -0,0 +1,33 @@
+// RUN: %clang %s -emit-llvm -g %O0opt -c -o %t.bc
+// RUN: rm -rf %t.klee-out
+// RUN: %klee --output-dir=%t.klee-out %t.bc
+//
+// There should be a unique solution
+// RUN: test -f %t.klee-out/test000001.ktest
+// RUN: test ! -f %t.klee-out/test000002.ktest
+
+// Now try to replay with libkleeRuntest
+// RUN: %cc %s %libkleeruntest -Wl,-rpath %libkleeruntestdir -o %t_runner
+// RUN: env KTEST_FILE=%t.klee-out/test000001.ktest %t_runner | FileCheck %s
+
+#include "klee/klee.h"
+#include <stdio.h>
+
+int main(int argc, char** argv) {
+  int x = 0;
+  klee_make_symbolic(&x, sizeof(x), "x");
+
+  if (klee_is_replay()) { // only print x on replay runs
+    printf("x = %d\n", x);
+  }
+
+  // For the sake of testing, these constraints have a single solution
+  klee_assume(40 < x);
+  klee_assume(x < 43);
+  klee_assume((x & 1) == 0);
+
+  return 0;
+}
+
+// When replaying, it should print the concrete value it is running with
+// CHECK: x = 42