Initial KLEE checkin.

 - Lots more tweaks, documentation, and web page content is needed,
   but this should compile & work on OS X & Linux.


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@72205 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/runtime/klee-libc/klee-choose.c b/runtime/klee-libc/klee-choose.c
new file mode 100644
index 00000000..106b4f89
--- /dev/null
+++ b/runtime/klee-libc/klee-choose.c
@@ -0,0 +1,20 @@
+//===-- klee-choose.c -----------------------------------------------------===//
+//
+//                     The KLEE Symbolic Virtual Machine
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "klee/klee.h"
+
+unsigned klee_choose(unsigned n) {
+  unsigned x;
+  klee_make_symbolic(&x, sizeof x);
+
+  // NB: this will *not* work if they don't compare to n values.
+  if(x >= n)
+    klee_silent_exit(0);
+  return x;
+}