MEM_RESERVE regions are not accessible by ReadProcessMemory()

util/win/process_info_test.cc

Index: util/win/process_info_test.cc
diff --git a/util/win/process_info_test.cc b/util/win/process_info_test.cc
index d3d674dd875ad10131145d151731abde57776915..be205cdcd49a828bd94db5a5621e3f9677359031 100644
--- a/util/win/process_info_test.cc
+++ b/util/win/process_info_test.cc
@@ -279,6 +279,29 @@ TEST(ProcessInfo, AccessibleRangesOneMovedStart) {
   EXPECT_EQ(5, result[0].size());
 }
 
+TEST(ProcessInfo, ReserveIsInaccessible) {
+  std::vector<ProcessInfo::MemoryInfo> memory_info;
+  MEMORY_BASIC_INFORMATION mbi = {0};
+
+  mbi.BaseAddress = 0;
+  mbi.RegionSize = 10;
+  mbi.State = MEM_RESERVE;
+  memory_info.push_back(ProcessInfo::MemoryInfo(mbi));
+
+  mbi.BaseAddress = reinterpret_cast<void*>(10);
+  mbi.RegionSize = 20;
+  mbi.State = MEM_COMMIT;
+  memory_info.push_back(ProcessInfo::MemoryInfo(mbi));
+
+  std::vector<CheckedRange<WinVMAddress, WinVMSize>> result =
+      GetReadableRangesOfMemoryMap(CheckedRange<WinVMAddress, WinVMSize>(5, 10),
+                                   memory_info);
+
+  ASSERT_EQ(result.size(), 1u);
+  EXPECT_EQ(10, result[0].base());
+  EXPECT_EQ(5, result[0].size());
+}
+
 TEST(ProcessInfo, AccessibleRangesCoalesced) {
   std::vector<ProcessInfo::MemoryInfo> memory_info;
   MEMORY_BASIC_INFORMATION mbi = {0};
@@ -295,7 +318,7 @@ TEST(ProcessInfo, AccessibleRangesCoalesced) {
 
   mbi.BaseAddress = reinterpret_cast<void*>(12);
   mbi.RegionSize = 5;
-  mbi.State = MEM_RESERVE;
+  mbi.State = MEM_COMMIT;
   memory_info.push_back(ProcessInfo::MemoryInfo(mbi));
 
   std::vector<CheckedRange<WinVMAddress, WinVMSize>> result =