diff --git a/base/array.jl b/base/array.jl
index 4fcf29af69b4b..76d5981ba8861 100644
--- a/base/array.jl
+++ b/base/array.jl
@@ -1068,6 +1068,9 @@ function _growbeg!(a::Vector, delta::Integer)
     else
         @noinline (function()
         memlen = length(mem)
+        if offset + len - 1 > memlen || offset < 1
+            throw(ConcurrencyViolationError("Vector has invalid state. Don't modify internal fields incorrectly, or resize without correct locks"))
+        end
         # since we will allocate the array in the middle of the memory we need at least 2*delta extra space
         # the +1 is because I didn't want to have an off by 1 error.
         newmemlen = max(overallocation(memlen), len + 2 * delta + 1)
@@ -1083,6 +1086,9 @@ function _growbeg!(a::Vector, delta::Integer)
             newmem = array_new_memory(mem, newmemlen)
         end
         unsafe_copyto!(newmem, newoffset + delta, mem, offset, len)
+        if ref !== a.ref
+            @noinline throw(ConcurrencyViolationError("Vector can not be resized concurrently"))
+        end
         setfield!(a, :ref, @inbounds GenericMemoryRef(newmem, newoffset))
         end)()
     end
@@ -1103,6 +1109,10 @@ function _growend!(a::Vector, delta::Integer)
     newmemlen = offset + newlen - 1
     if memlen < newmemlen
         @noinline (function()
+        if offset + len - 1 > memlen || offset < 1
+            throw(ConcurrencyViolationError("Vector has invalid state. Don't modify internal fields incorrectly, or resize without correct locks"))
+        end
+
         if offset - 1 > div(5 * newlen, 4)
             # If the offset is far enough that we can copy without resizing
             # while maintaining proportional spacing on both ends of the array
@@ -1120,6 +1130,9 @@ function _growend!(a::Vector, delta::Integer)
         end
         newref = @inbounds GenericMemoryRef(newmem, newoffset)
         unsafe_copyto!(newref, ref, len)
+        if ref !== a.ref
+            @noinline throw(ConcurrencyViolationError("Vector can not be resized concurrently"))
+        end
         setfield!(a, :ref, newref)
         end)()
     end