Cope with $MEMORY_LIMIT not being set

Glyn Normington · Glyn Normington · commit 493448f030b8 · 2013-07-09T12:16:45.000+01:00
The warning code failed if $MEMORY_LIMIT is not set. Add a guard to
allow it to cope.

[#52692569]
diff --git a/lib/java_buildpack/jre/memory/weight_balancing_memory_heuristic.rb b/lib/java_buildpack/jre/memory/weight_balancing_memory_heuristic.rb
@@ -130,12 +130,14 @@ def issue_close_to_default_warnings(buckets, heuristics, memory_limit)
       buckets.each do |type, bucket|
         if @sizes[type]
           default_size = bucket.default_size
-          actual_size = bucket.size
-          if default_size != MemorySize.ZERO
-            factor = ((actual_size - default_size) / default_size).abs
-          end
-          if (default_size == MemorySize.ZERO && actual_size == MemorySize.ZERO) || factor < CLOSE_TO_DEFAULT_FACTOR
-            $stderr.puts "-----> WARNING: the configured value #{actual_size} of memory size #{type} is close to the default value #{default_size}. Consider deleting the configured value and taking the default."
+          if default_size
+            actual_size = bucket.size
+            if default_size != MemorySize.ZERO
+              factor = ((actual_size - default_size) / default_size).abs
+            end
+            if (default_size == MemorySize.ZERO && actual_size == MemorySize.ZERO) || factor < CLOSE_TO_DEFAULT_FACTOR
+              $stderr.puts "-----> WARNING: the configured value #{actual_size} of memory size #{type} is close to the default value #{default_size}. Consider deleting the configured value and taking the default."
+            end
           end
         end
       end
