MSVC optimization bug

net/base/lookup_string_in_fixed_set.cc

Index: net/base/lookup_string_in_fixed_set.cc
diff --git a/net/base/lookup_string_in_fixed_set.cc b/net/base/lookup_string_in_fixed_set.cc
index 46497f3c47bb654c44e6aa34f9b72a2fd5820fb9..efb41ac0dc12247ac6684c22b872639cc60fbe14 100644
--- a/net/base/lookup_string_in_fixed_set.cc
+++ b/net/base/lookup_string_in_fixed_set.cc
@@ -91,11 +91,13 @@ int LookupStringInFixedSet(const unsigned char* graph,
                            size_t length,
                            const char* key,
                            size_t key_length) {
+  DLOG(INFO) << "This is some very useful and relevant info";
   const unsigned char* pos = graph;
   const unsigned char* end = graph + length;
   const unsigned char* offset = pos;
   const char* key_end = key + key_length;
   while (GetNextOffset(&pos, end, &offset)) {
+    DCHECK((pos == nullptr) || pos < end) << std::string(key, length);
     //   char <char>+ end_char offsets
     //   char <char>+ return value
     //   char end_char offsets