diff --git a/base/REPL.jl b/base/REPL.jl
index 323a0d6d7cca8..67d61fbdbeae9 100644
--- a/base/REPL.jl
+++ b/base/REPL.jl
@@ -82,7 +82,7 @@ end
 
 function start_repl_backend(repl_channel::RemoteRef, response_channel::RemoteRef)
     backend = REPLBackend(repl_channel, response_channel, nothing)
-    @async begin
+    global interactive_task = @schedule begin
         # include looks at this to determine the relative include path
         # nothing means cwd
         while true
diff --git a/base/task.jl b/base/task.jl
index f732343d1a2ec..272b731af01f4 100644
--- a/base/task.jl
+++ b/base/task.jl
@@ -80,6 +80,10 @@ function task_done_hook(t::Task)
         end
         yieldto(nexttask, result)
     else
+        if err && isa(result,InterruptException) && isdefined(REPL,:interactive_task) &&
+            REPL.interactive_task.state == :waiting && isempty(Workqueue)
+            throwto(REPL.interactive_task, result)
+        end
         wait()
     end
 end
diff --git a/src/julia.h b/src/julia.h
index c3879f7c1a696..ae8bd3fa9931a 100644
--- a/src/julia.h
+++ b/src/julia.h
@@ -1344,7 +1344,7 @@ typedef struct {
 
 extern DLLEXPORT jl_compileropts_t jl_compileropts;
 
-// Settings for code_coverage and mallog_log
+// Settings for code_coverage and malloc_log
 #define JL_LOG_NONE 0
 #define JL_LOG_USER 1
 #define JL_LOG_ALL  2
diff --git a/test/intfuncs.jl b/test/intfuncs.jl
index 8d1fce1084df6..239031d399e41 100644
--- a/test/intfuncs.jl
+++ b/test/intfuncs.jl
@@ -86,3 +86,19 @@
 
 @test isqrt(4) == 2
 @test isqrt(5) == 2
+# issue #4884
+@test isqrt(9223372030926249000) == 3037000498
+@test isqrt(typemax(Int128)) == int128("13043817825332782212")
+@test isqrt(int128(typemax(Int64))^2-1) == 9223372036854775806
+@test isqrt(0) == 0
+for i = 1:1000
+    n = rand(UInt128)
+    s = isqrt(n)
+    @test s*s <= n
+    @test (s+1)*(s+1) > n
+    n = rand(UInt64)
+    s = isqrt(n)
+    @test s*s <= n
+    @test (s+1)*(s+1) > n
+end
+
diff --git a/test/math.jl b/test/math.jl
index 0f28b4c1b09d4..3514baac9e263 100644
--- a/test/math.jl
+++ b/test/math.jl
@@ -277,22 +277,6 @@ end
 @test any(ccall("jl_zero_subnormals", UInt8, (UInt8,), 1) .== [0x00 0x01])
 @test any(ccall("jl_zero_subnormals", UInt8, (UInt8,), 0) .== [0x00 0x01])
 
-# isqrt (issue #4884)
-@test isqrt(9223372030926249000) == 3037000498
-@test isqrt(typemax(Int128)) == int128("13043817825332782212")
-@test isqrt(int128(typemax(Int64))^2-1) == 9223372036854775806
-@test isqrt(0) == 0
-for i = 1:1000
-    n = rand(UInt128)
-    s = isqrt(n)
-    @test s*s <= n
-    @test (s+1)*(s+1) > n
-    n = rand(UInt64)
-    s = isqrt(n)
-    @test s*s <= n
-    @test (s+1)*(s+1) > n
-end
-
 # useful test functions for relative error
 err(z, x) = abs(z - x) / abs(x)
 errc(z, x) = max(err(real(z),real(x)), err(imag(z),imag(x)))