1 files changed, 81 insertions, 0 deletions
diff --git a/core/fxcrt/fx_memory_unittest.cpp b/core/fxcrt/fx_memory_unittest.cpp
new file mode 100644
index 0000000000..ae15db2a72
--- /dev/null
+++ b/core/fxcrt/fx_memory_unittest.cpp
@@ -0,0 +1,81 @@
+// Copyright 2015 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/fxcrt/fx_memory.h"
+
+#include <limits>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+const size_t kMaxByteAlloc = std::numeric_limits<size_t>::max();
+const size_t kMaxIntAlloc = kMaxByteAlloc / sizeof(int);
+const size_t kOverflowIntAlloc = kMaxIntAlloc + 100;
+const size_t kWidth = 640;
+const size_t kOverflowIntAlloc2D = kMaxIntAlloc / kWidth + 10;
+
+}  // namespace
+
+// TODO(tsepez): re-enable OOM tests if we can find a way to
+// prevent it from hosing the bots.
+TEST(fxcrt, DISABLED_FX_AllocOOM) {
+  EXPECT_DEATH_IF_SUPPORTED((void)FX_Alloc(int, kMaxIntAlloc), "");
+
+  int* ptr = FX_Alloc(int, 1);
+  EXPECT_TRUE(ptr);
+  EXPECT_DEATH_IF_SUPPORTED((void)FX_Realloc(int, ptr, kMaxIntAlloc), "");
+  FX_Free(ptr);
+}
+
+TEST(fxcrt, FX_AllocOverflow) {
+  // |ptr| needs to be defined and used to avoid Clang optimizes away the
+  // FX_Alloc() statement overzealously for optimized builds.
+  int* ptr = nullptr;
+  EXPECT_DEATH_IF_SUPPORTED(ptr = FX_Alloc(int, kOverflowIntAlloc), "") << ptr;
+
+  ptr = FX_Alloc(int, 1);
+  EXPECT_TRUE(ptr);
+  EXPECT_DEATH_IF_SUPPORTED((void)FX_Realloc(int, ptr, kOverflowIntAlloc), "");
+  FX_Free(ptr);
+}
+
+TEST(fxcrt, FX_AllocOverflow2D) {
+  // |ptr| needs to be defined and used to avoid Clang optimizes away the
+  // FX_Alloc() statement overzealously for optimized builds.
+  int* ptr = nullptr;
+  EXPECT_DEATH_IF_SUPPORTED(ptr = FX_Alloc2D(int, kWidth, kOverflowIntAlloc2D),
+                            "")
+      << ptr;
+}
+
+TEST(fxcrt, DISABLED_FX_TryAllocOOM) {
+  EXPECT_FALSE(FX_TryAlloc(int, kMaxIntAlloc));
+
+  int* ptr = FX_Alloc(int, 1);
+  EXPECT_TRUE(ptr);
+  EXPECT_FALSE(FX_TryRealloc(int, ptr, kMaxIntAlloc));
+  FX_Free(ptr);
+}
+
+TEST(fxcrt, FX_TryAllocOverflow) {
+  // |ptr| needs to be defined and used to avoid Clang optimizes away the
+  // calloc() statement overzealously for optimized builds.
+  int* ptr = (int*)calloc(sizeof(int), kOverflowIntAlloc);
+  EXPECT_FALSE(ptr) << ptr;
+
+  ptr = FX_Alloc(int, 1);
+  EXPECT_TRUE(ptr);
+  EXPECT_FALSE(FX_TryRealloc(int, ptr, kOverflowIntAlloc));
+  FX_Free(ptr);
+}
+
+TEST(fxcrt, DISABLED_FXMEM_DefaultOOM) {
+  EXPECT_FALSE(FXMEM_DefaultAlloc(kMaxByteAlloc, 0));
+
+  void* ptr = FXMEM_DefaultAlloc(1, 0);
+  EXPECT_TRUE(ptr);
+  EXPECT_FALSE(FXMEM_DefaultRealloc(ptr, kMaxByteAlloc, 0));
+  FXMEM_DefaultFree(ptr, 0);
+}