Revert "[compiler-rt][asan] Make wild-pointer crash error more useful"

This reverts commit f65e1ae.

Author: oontvoo

compiler-rt/lib/asan/asan_descriptions.cpp

@@ -77,6 +77,7 @@ static bool GetShadowKind(uptr addr, ShadowKind *shadow_kind) {
   } else if (AddrIsInLowShadow(addr)) {
     *shadow_kind = kShadowKindLow;
   } else {
+    CHECK(0 && "Address is not in memory and not in shadow?");
     return false;
   }
   return true;
@@ -463,13 +464,7 @@ AddressDescription::AddressDescription(uptr addr, uptr access_size,
     return;
   }
   data.kind = kAddressKindWild;
-  data.wild.addr = addr;
-  data.wild.access_size = access_size;
-}
-
-void WildAddressDescription::Print() const {
-  Printf("Address %p is a wild pointer inside of access range of size %p.\n",
-         addr, access_size);
+  addr = 0;
 }
 
 void PrintAddressDescription(uptr addr, uptr access_size,

compiler-rt/lib/asan/asan_descriptions.h

@@ -146,13 +146,6 @@ struct StackAddressDescription {
 bool GetStackAddressInformation(uptr addr, uptr access_size,
                                 StackAddressDescription *descr);
 
-struct WildAddressDescription {
-  uptr addr;
-  uptr access_size;
-
-  void Print() const;
-};
-
 struct GlobalAddressDescription {
   uptr addr;
   // Assume address is close to at most four globals.
@@ -200,7 +193,7 @@ class AddressDescription {
       HeapAddressDescription heap;
       StackAddressDescription stack;
       GlobalAddressDescription global;
-      WildAddressDescription wild;
+      uptr addr;
     };
   };
 
@@ -218,7 +211,7 @@ class AddressDescription {
   uptr Address() const {
     switch (data.kind) {
       case kAddressKindWild:
-        return data.wild.addr;
+        return data.addr;
       case kAddressKindShadow:
         return data.shadow.addr;
       case kAddressKindHeap:
@@ -233,7 +226,7 @@ class AddressDescription {
   void Print(const char *bug_descr = nullptr) const {
     switch (data.kind) {
       case kAddressKindWild:
-        data.wild.Print();
+        Printf("Address %p is a wild pointer.\n", data.addr);
         return;
       case kAddressKindShadow:
         return data.shadow.Print();