Add safe FX_Alloc2D() macro

core/src/fxcrt/fx_basic_memmgr_unittest.cpp

Index: core/src/fxcrt/fx_basic_memmgr_unittest.cpp
diff --git a/core/src/fxcrt/fx_basic_memmgr_unittest.cpp b/core/src/fxcrt/fx_basic_memmgr_unittest.cpp
index 565021d29e08880eb283b4e689abe92eba844fb7..c70f3b197d53777ee50fa23ac9601a4851d653bd 100644
--- a/core/src/fxcrt/fx_basic_memmgr_unittest.cpp
+++ b/core/src/fxcrt/fx_basic_memmgr_unittest.cpp
@@ -12,6 +12,8 @@ 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
 
@@ -35,6 +37,11 @@ TEST(fxcrt, FX_AllocOverflow) {
     FX_Free(ptr);
 }
 
+TEST(fxcrt, FX_AllocOverflow2D) {
+    EXPECT_DEATH_IF_SUPPORTED(
+        FX_Alloc2D(int, kWidth, kOverflowIntAlloc2D), "");
+}
+
 TEST(fxcrt, DISABLED_FX_TryAllocOOM) {
     EXPECT_FALSE(FX_TryAlloc(int, kMaxIntAlloc));