Populate allocation size into OOM exception on Windows.

base/process/memory_unittest.cc

Index: base/process/memory_unittest.cc
diff --git a/base/process/memory_unittest.cc b/base/process/memory_unittest.cc
index 0be2d4400633ba75101423e4a452891ddb87d9aa..909905c692045dbdb9bff7472ecdde7f41506cf9 100644
--- a/base/process/memory_unittest.cc
+++ b/base/process/memory_unittest.cc
@@ -409,6 +409,34 @@ class OutOfMemoryHandledTest : public OutOfMemoryTest {
   }
 };
 
+#if defined(OS_WIN)
+
+namespace {
+
+DWORD HandleOutOfMemoryException(EXCEPTION_POINTERS* exception_ptrs,
+                                 size_t expected_size) {
+  EXPECT_EQ(base::win::kOomExceptionCode,
+            exception_ptrs->ExceptionRecord->ExceptionCode);
+  EXPECT_LE(1U, exception_ptrs->ExceptionRecord->NumberParameters);
+  EXPECT_EQ(expected_size,
+            exception_ptrs->ExceptionRecord->ExceptionInformation[0]);
+  return EXCEPTION_EXECUTE_HANDLER;
+}
+
+}  // namespace
+
+TEST_F(OutOfMemoryTest, TerminateBecauseOutOfMemoryReportsAllocSize) {
+  // On Windows, TerminateBecauseOutOfMemory reports the attempted allocation
+  // size in the exception raised.
+  const size_t kAttemptedAllocationSize = 0xBADA55;

[Will Harris, 2017/02/06 18:24:03]

Can you test with a value that does not fit in 32bit value, on 64-bit platforms?

[Sigurður Ásgeirsson, 2017/02/06 19:43:58]

Done.

+  __try {
+    base::TerminateBecauseOutOfMemory(kAttemptedAllocationSize);
+  } __except (HandleOutOfMemoryException(GetExceptionInformation(),
+                                         kAttemptedAllocationSize)) {
+  }
+}
+#endif  // OS_WIN
+
 // TODO(b.kelemen): make UncheckedMalloc and UncheckedCalloc work
 // on Windows as well.
 TEST_F(OutOfMemoryHandledTest, UncheckedMalloc) {