Improve error message when zone allocation fails.

runtime/vm/zone.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/zone.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
 #include "vm/handles_impl.h"
@@ skipping 17 matching lines @@
   static Segment* New(intptr_t size, Segment* next);
   static void DeleteSegmentList(Segment* segment);
 
  private:
   Segment* next_;
   intptr_t size_;
 
   // Computes the address of the nth byte in this segment.
   uword address(int n) { return reinterpret_cast<uword>(this) + n; }
 
-  static void Delete(Segment* segment) { delete[] segment; }
+  static void Delete(Segment* segment) { free(segment); }
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Segment);
 };
 
 
 void Zone::Segment::DeleteSegmentList(Segment* head) {
   Segment* current = head;
   while (current != NULL) {
     Segment* next = current->next();
 #ifdef DEBUG
     // Zap the entire current segment (including the header).
     memset(current, kZapDeletedByte, current->size());
 #endif
     Segment::Delete(current);
     current = next;
   }
 }
 
 
 Zone::Segment* Zone::Segment::New(intptr_t size, Zone::Segment* next) {
   ASSERT(size >= 0);
-  Segment* result = reinterpret_cast<Segment*>(new uint8_t[size]);
+  Segment* result = reinterpret_cast<Segment*>(malloc(size));
+  if (result == NULL) {
+    FATAL("Out of memory.\n");
+  }
   ASSERT(Utils::IsAligned(result->start(), Zone::kAlignment));
-  if (result != NULL) {
 #ifdef DEBUG
-    // Zap the entire allocated segment (including the header).
-    memset(result, kZapUninitializedByte, size);
+  // Zap the entire allocated segment (including the header).
+  memset(result, kZapUninitializedByte, size);
 #endif
-    result->next_ = next;
-    result->size_ = size;
-  }
+  result->next_ = next;
+  result->size_ = size;
   return result;
 }
 
 
 void Zone::DeleteAll() {
   // Traverse the chained list of segments, zapping (in debug mode)
   // and freeing every zone segment.
   if (head_ != NULL) {
     Segment::DeleteSegmentList(head_);
   }
@@ skipping 147 matching lines @@
   return buffer;
 }
 
 
 char* Zone::VPrint(const char* format, va_list args) {
   return OS::VSCreate(this, format, args);
 }
 
 
 }  // namespace dart