3 files changed, 9 insertions, 2 deletions
diff --git a/Source/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp b/Source/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp
index 884248b20..2e08f1205 100644
--- a/Source/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp
+++ b/Source/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp
@@ -93,7 +93,10 @@ protected:
             if (!result)
                 return;
             ASSERT(result == -1);
-            ASSERT(errno == EAGAIN);
+            if (errno != EAGAIN) {
+                ASSERT_NOT_REACHED(); // In debug mode, this should be a hard failure.
+                break; // In release mode, we should just ignore the error - not returning memory to the OS is better than crashing, especially since we _will_ be able to reuse the memory internally anyway.
+            }
         }
 #else
         m_reservation.decommit(page, pageSize());
diff --git a/Source/JavaScriptCore/jit/JIT.cpp b/Source/JavaScriptCore/jit/JIT.cpp
index abc79d34b..c2aec549a 100644
--- a/Source/JavaScriptCore/jit/JIT.cpp
+++ b/Source/JavaScriptCore/jit/JIT.cpp
@@ -749,6 +749,8 @@ JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffo
         static_cast<double>(result.size()) /
         static_cast<double>(m_codeBlock->instructions().size()));
     
+    m_codeBlock->shrinkToFit(CodeBlock::LateShrink);
+    
 #if ENABLE(JIT_VERBOSE)
     dataLog("JIT generated code for %p at [%p, %p).\n", m_codeBlock, result.executableMemory()->start(), result.executableMemory()->end());
 #endif
diff --git a/Source/JavaScriptCore/jit/JITStubs.cpp b/Source/JavaScriptCore/jit/JITStubs.cpp
index 73f4892ac..a6d6be106 100644
--- a/Source/JavaScriptCore/jit/JITStubs.cpp
+++ b/Source/JavaScriptCore/jit/JITStubs.cpp
@@ -1492,7 +1492,9 @@ DEFINE_STUB_FUNCTION(JSObject*, op_put_by_id_transition_realloc)
 
     ASSERT(baseValue.isObject());
     JSObject* base = asObject(baseValue);
-    base->allocatePropertyStorage(*stackFrame.globalData, oldSize, newSize);
+    JSGlobalData& globalData = *stackFrame.globalData;
+    PropertyStorage newStorage = base->growPropertyStorage(globalData, oldSize, newSize);
+    base->setPropertyStorage(globalData, newStorage, newStructure);
 
     return base;
 }