6 files changed, 115 insertions, 0 deletions
diff --git a/llvm/lib/Fuzzer/test/ExactTest.cpp b/llvm/lib/Fuzzer/test/ExactTest.cpp
new file mode 100644
index 00000000000..662dd333eea
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/ExactTest.cpp
@@ -0,0 +1,21 @@
+// Simple test for a fuzzer. The fuzzer must find the string "FUZZER".
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
+  int bits = 0;
+  if (Size > 0 && Data[0] == 'F') bits |= 1;
+  if (Size > 1 && Data[1] == 'U') bits |= 2;
+  if (Size > 2 && Data[2] == 'Z') bits |= 4;
+  if (Size > 3 && Data[3] == 'Z') bits |= 8;
+  if (Size > 4 && Data[4] == 'E') bits |= 16;
+  if (Size > 5 && Data[5] == 'R') bits |= 32;
+  if (bits == 63) {
+    std::cerr <<  "BINGO!\n";
+    abort();
+  }
+}
+
diff --git a/llvm/lib/Fuzzer/test/InfiniteTest.cpp b/llvm/lib/Fuzzer/test/InfiniteTest.cpp
new file mode 100644
index 00000000000..9f4864abdd4
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/InfiniteTest.cpp
@@ -0,0 +1,19 @@
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        Size = 2;
+      }
+    }
+  }
+}
+
diff --git a/llvm/lib/Fuzzer/test/NullDerefTest.cpp b/llvm/lib/Fuzzer/test/NullDerefTest.cpp
new file mode 100644
index 00000000000..602276f3c81
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/NullDerefTest.cpp
@@ -0,0 +1,21 @@
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+static volatile int *Null = 0;
+
+extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "Found the target, dereferencing NULL\n";
+        *Null = 1;
+      }
+    }
+  }
+}
+
diff --git a/llvm/lib/Fuzzer/test/SimpleTest.cpp b/llvm/lib/Fuzzer/test/SimpleTest.cpp
new file mode 100644
index 00000000000..9e20d8e6ac9
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/SimpleTest.cpp
@@ -0,0 +1,20 @@
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "Found the target, exiting\n";
+        exit(0);
+      }
+    }
+  }
+}
+
diff --git a/llvm/lib/Fuzzer/test/TestFuzzerCrossOver.cpp b/llvm/lib/Fuzzer/test/TestFuzzerCrossOver.cpp
new file mode 100644
index 00000000000..7f7619618ec
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/TestFuzzerCrossOver.cpp
@@ -0,0 +1,13 @@
+#include "FuzzerInternal.h"
+
+int main() {
+  using namespace fuzzer;
+  Unit A({0, 1, 2, 3, 4}), B({5, 6, 7, 8, 9});
+  Unit C;
+  for (size_t Len = 1; Len < 15; Len++) {
+    for (int Iter = 0; Iter < 1000; Iter++) {
+      CrossOver(A, B, &C, Len);
+      Print(C);
+    }
+  }
+}
diff --git a/llvm/lib/Fuzzer/test/TimeoutTest.cpp b/llvm/lib/Fuzzer/test/TimeoutTest.cpp
new file mode 100644
index 00000000000..c5a8ac00579
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/TimeoutTest.cpp
@@ -0,0 +1,21 @@
+// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+static volatile int Sink;
+
+extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        Size = 2;
+        while (Sink)
+          ;
+      }
+    }
+  }
+}
+