Added regression test for bug reported by @kren1 in #262

1 files changed, 24 insertions, 0 deletions

diff --git a/test/regression/2015-08-05-invalid-fork.c b/test/regression/2015-08-05-invalid-fork.c
new file mode 100644
index 00000000..7c35872c
--- /dev/null
+++ b/test/regression/2015-08-05-invalid-fork.c
@@ -0,0 +1,24 @@
+/* Reported by @kren1 in #262 
+   The test makes sure that the string "Should be printed once" 
+   is printed a single time. 
+*/
+
+// RUN: %llvmgcc %s -emit-llvm -g -O0 -c -o %t.bc
+// RUN: rm -rf %t.klee-out
+// RUN: %klee --output-dir=%t.klee-out %t.bc | FileCheck %s
+
+static int g_10 = 0x923607A9L;
+
+int main(int argc, char* argv[]) {
+  klee_make_symbolic(&g_10,sizeof(g_10), "g_10");
+  if (g_10 < (int)0x923607A9L) klee_silent_exit(0);
+  if (g_10 > (int)0x923607A9L) klee_silent_exit(0);
+
+  int b = 2;
+  int i = g_10 % (1 % g_10);
+  i || b;
+  printf("Should be printed once\n");
+  // CHECK: Should be printed once
+  // CHECK-NOT: Should be printed once
+  return 0;
+}