diff --git a/src/c_wrapper/buffer.cpp b/src/c_wrapper/buffer.cpp
index 6b82706d03f9f5205fdd9fd44e3d5b21c6ca92e2..b0775d65faa56d19aa5b4cb4cb9fb2a1f24c3e69 100644
--- a/src/c_wrapper/buffer.cpp
+++ b/src/c_wrapper/buffer.cpp
@@ -15,14 +15,13 @@ new_buffer(cl_mem mem)
 
 #if PYOPENCL_CL_VERSION >= 0x1010
 PYOPENCL_USE_RESULT buffer*
-buffer::get_sub_region(size_t origin, size_t size, cl_mem_flags flags) const
+buffer::get_sub_region(size_t orig, size_t size, cl_mem_flags flags) const
 {
-    cl_buffer_region region = {origin, size};
+    cl_buffer_region reg = {orig, size};
 
     auto mem = retry_mem_error([&] {
             return pyopencl_call_guarded(clCreateSubBuffer, this, flags,
-                                         CL_BUFFER_CREATE_TYPE_REGION,
-                                         &region);
+                                         CL_BUFFER_CREATE_TYPE_REGION, &reg);
         });
     return new_buffer(mem);
 }
@@ -67,11 +66,9 @@ create_buffer(clobj_t *buffer, clobj_t _ctx, cl_mem_flags flags,
               size_t size, void *hostbuf)
 {
     auto ctx = static_cast<context*>(_ctx);
-    return c_handle_error([&] {
-            auto mem = retry_mem_error([&] {
-                    return pyopencl_call_guarded(clCreateBuffer, ctx,
-                                                 flags, size, hostbuf);
-                });
+    return c_handle_retry_mem_error([&] {
+            auto mem = pyopencl_call_guarded(clCreateBuffer, ctx,
+                                             flags, size, hostbuf);
             *buffer = new_buffer(mem);
         });
 }
@@ -80,18 +77,15 @@ error*
 enqueue_read_buffer(clobj_t *evt, clobj_t _queue, clobj_t _mem,
                     void *buffer, size_t size, size_t device_offset,
                     const clobj_t *_wait_for, uint32_t num_wait_for,
-                    int is_blocking, void *pyobj)
+                    int block, void *pyobj)
 {
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
     auto queue = static_cast<command_queue*>(_queue);
     auto mem = static_cast<memory_object*>(_mem);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueReadBuffer, queue, mem,
-                        bool(is_blocking), device_offset, size,
-                        buffer, wait_for, nanny_event_out(evt, pyobj));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(
+                clEnqueueReadBuffer, queue, mem, bool(block), device_offset,
+                size, buffer, wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
@@ -99,18 +93,15 @@ error*
 enqueue_write_buffer(clobj_t *evt, clobj_t _queue, clobj_t _mem,
                      const void *buffer, size_t size, size_t device_offset,
                      const clobj_t *_wait_for, uint32_t num_wait_for,
-                     int is_blocking, void *pyobj)
+                     int block, void *pyobj)
 {
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
     auto queue = static_cast<command_queue*>(_queue);
     auto mem = static_cast<memory_object*>(_mem);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueWriteBuffer, queue, mem,
-                        bool(is_blocking), device_offset, size, buffer,
-                        wait_for, nanny_event_out(evt, pyobj));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(
+                clEnqueueWriteBuffer, queue, mem, bool(block), device_offset,
+                size, buffer, wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
@@ -153,12 +144,10 @@ enqueue_fill_buffer(clobj_t *evt, clobj_t _queue, clobj_t _mem, void *pattern,
     auto queue = static_cast<command_queue*>(_queue);
     auto mem = static_cast<memory_object*>(_mem);
     // TODO debug print pattern
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueFillBuffer, queue, mem, pattern, psize,
-                        offset, size, wait_for, event_out(evt));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueFillBuffer, queue, mem, pattern,
+                                  psize, offset, size, wait_for,
+                                  event_out(evt));
         });
 }
 
@@ -184,14 +173,11 @@ enqueue_read_buffer_rect(clobj_t *evt, clobj_t _queue, clobj_t _mem, void *buf,
     ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
     ConstBuffer<size_t, 2> buf_pitches(_buf_pitches, buf_pitches_l);
     ConstBuffer<size_t, 2> host_pitches(_host_pitches, host_pitches_l);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueReadBufferRect, queue, mem, bool(block),
-                        buf_orig, host_orig, reg, buf_pitches[0],
-                        buf_pitches[1], host_pitches[0], host_pitches[1],
-                        buf, wait_for, nanny_event_out(evt, pyobj));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(
+                clEnqueueReadBufferRect, queue, mem, bool(block), buf_orig,
+                host_orig, reg, buf_pitches[0], buf_pitches[1], host_pitches[0],
+                host_pitches[1], buf, wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
@@ -213,14 +199,11 @@ enqueue_write_buffer_rect(clobj_t *evt, clobj_t _queue, clobj_t _mem, void *buf,
     ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
     ConstBuffer<size_t, 2> buf_pitches(_buf_pitches, buf_pitches_l);
     ConstBuffer<size_t, 2> host_pitches(_host_pitches, host_pitches_l);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueWriteBufferRect, queue, mem, bool(block),
-                        buf_orig, host_orig, reg, buf_pitches[0],
-                        buf_pitches[1], host_pitches[0], host_pitches[1],
-                        buf, wait_for, nanny_event_out(evt, pyobj));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(
+                clEnqueueWriteBufferRect, queue, mem, bool(block), buf_orig,
+                host_orig, reg, buf_pitches[0], buf_pitches[1], host_pitches[0],
+                host_pitches[1], buf, wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
@@ -242,14 +225,11 @@ enqueue_copy_buffer_rect(clobj_t *evt, clobj_t _queue, clobj_t _src,
     ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
     ConstBuffer<size_t, 2> src_pitches(_src_pitches, src_pitches_l);
     ConstBuffer<size_t, 2> dst_pitches(_dst_pitches, dst_pitches_l);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueCopyBufferRect, queue, src, dst,
-                        src_orig, dst_orig, reg, src_pitches[0],
-                        src_pitches[1], dst_pitches[0], dst_pitches[1],
-                        wait_for, event_out(evt));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(
+                clEnqueueCopyBufferRect, queue, src, dst, src_orig, dst_orig,
+                reg, src_pitches[0], src_pitches[1], dst_pitches[0],
+                dst_pitches[1], wait_for, event_out(evt));
         });
 }
 
diff --git a/src/c_wrapper/buffer.h b/src/c_wrapper/buffer.h
index 14b8118fb77e9e46b791ec39ba40ed0c8656a4ca..193c531b2c82495d015a2f844230a9dfd0dd89ad 100644
--- a/src/c_wrapper/buffer.h
+++ b/src/c_wrapper/buffer.h
@@ -17,7 +17,7 @@ public:
     {}
 
 #if PYOPENCL_CL_VERSION >= 0x1010
-    PYOPENCL_USE_RESULT buffer *get_sub_region(size_t origin, size_t size,
+    PYOPENCL_USE_RESULT buffer *get_sub_region(size_t orig, size_t size,
                                                cl_mem_flags flags) const;
 #endif
 };
diff --git a/src/c_wrapper/error.h b/src/c_wrapper/error.h
index d98e0b5aacb04d389ee0d2c308573d5cf22b2c22..4e8762627a3d8e6cccba8aa7c21a44173678fdb1 100644
--- a/src/c_wrapper/error.h
+++ b/src/c_wrapper/error.h
@@ -256,7 +256,7 @@ call_guarded_cleanup(cl_int (*func)(ArgTypes...), const char *name,
 #define pyopencl_call_guarded_cleanup(func, args...)    \
     pyopencl::call_guarded_cleanup(func, #func, args)
 
-PYOPENCL_USE_RESULT static PYOPENCL_INLINE ::error*
+PYOPENCL_USE_RESULT static PYOPENCL_INLINE error*
 c_handle_error(std::function<void()> func) noexcept
 {
     try {
@@ -292,6 +292,12 @@ retry_mem_error(Func func) -> decltype(func())
     return func();
 }
 
+PYOPENCL_USE_RESULT static PYOPENCL_INLINE error*
+c_handle_retry_mem_error(std::function<void()> func) noexcept
+{
+    return c_handle_error([&] {retry_mem_error(func);});
+}
+
 // }}}
 
 }
diff --git a/src/c_wrapper/event.h b/src/c_wrapper/event.h
index 2160b07cd999128ad998835fdb10ff16bd1071c9..17524b96ffe6e9556ead076f312ef70058006880 100644
--- a/src/c_wrapper/event.h
+++ b/src/c_wrapper/event.h
@@ -36,8 +36,7 @@ public:
 #endif
 };
 static PYOPENCL_INLINE auto
-event_out(clobj_t *ret)
-    -> decltype(pyopencl_outarg(event, ret, clReleaseEvent))
+event_out(clobj_t *ret) -> decltype(pyopencl_outarg(event, ret, clReleaseEvent))
 {
     return pyopencl_outarg(event, ret, clReleaseEvent);
 }
diff --git a/src/c_wrapper/function.h b/src/c_wrapper/function.h
index 70f9909b7c87bbd0592e1234201c2abb8e715a38..cbb62e35317e06d3f3d3a86aac2178d358464f1d 100644
--- a/src/c_wrapper/function.h
+++ b/src/c_wrapper/function.h
@@ -105,8 +105,7 @@ public:
     }
     template<template<typename...> class Getter, typename Func>
     PYOPENCL_INLINE auto
-    call(Func func)
-        -> decltype(call_tuple(func, this->get<Getter>()))
+    call(Func func) -> decltype(call_tuple(func, this->get<Getter>()))
     {
         return call_tuple(func, this->get<Getter>());
     }
diff --git a/src/c_wrapper/image.cpp b/src/c_wrapper/image.cpp
index 438f9a80b032b6403967f7c17fbd80da908d8429..e39bfa436e8caae354711096789770a5622d7288 100644
--- a/src/c_wrapper/image.cpp
+++ b/src/c_wrapper/image.cpp
@@ -59,21 +59,21 @@ image::get_image_info(cl_image_info param) const
 //       command_queue &cq,
 //       memory_object_holder &src,
 //       memory_object_holder &dest,
-//       py::object py_origin,
-//       py::object py_region,
+//       py::object py_orig,
+//       py::object py_reg,
 //       size_t offset,
 //       py::object py_wait_for
 //       )
 //   {
 //     PYOPENCL_PARSE_WAIT_FOR;
-//     COPY_PY_COORD_TRIPLE(origin);
-//     COPY_PY_REGION_TRIPLE(region);
+//     COPY_PY_COORD_TRIPLE(orig);
+//     COPY_PY_REGION_TRIPLE(reg);
 
 //     cl_event evt;
 //     PYOPENCL_RETRY_IF_MEM_ERROR(
 //       PYOPENCL_CALL_GUARDED(clEnqueueCopyImageToBuffer, (
 //             cq.data(), src.data(), dest.data(),
-//             origin, region, offset,
+//             orig, reg, offset,
 //             PYOPENCL_WAITLIST_ARGS, &evt
 //             ));
 //       );
@@ -86,20 +86,20 @@ image::get_image_info(cl_image_info param) const
 //       memory_object_holder &src,
 //       memory_object_holder &dest,
 //       size_t offset,
-//       py::object py_origin,
-//       py::object py_region,
+//       py::object py_orig,
+//       py::object py_reg,
 //       py::object py_wait_for
 //       )
 //   {
 //     PYOPENCL_PARSE_WAIT_FOR;
-//     COPY_PY_COORD_TRIPLE(origin);
-//     COPY_PY_REGION_TRIPLE(region);
+//     COPY_PY_COORD_TRIPLE(orig);
+//     COPY_PY_REGION_TRIPLE(reg);
 
 //     cl_event evt;
 //     PYOPENCL_RETRY_IF_MEM_ERROR(
 //       PYOPENCL_CALL_GUARDED(clEnqueueCopyBufferToImage, (
 //             cq.data(), src.data(), dest.data(),
-//             offset, origin, region,
+//             offset, orig, reg,
 //             PYOPENCL_WAITLIST_ARGS, &evt
 //             ));
 //       );
@@ -118,15 +118,12 @@ using namespace pyopencl;
 error*
 create_image_2d(clobj_t *img, clobj_t _ctx, cl_mem_flags flags,
                 cl_image_format *fmt, size_t width, size_t height,
-                size_t pitch, void *buffer)
+                size_t pitch, void *buf)
 {
     auto ctx = static_cast<context*>(_ctx);
-    return c_handle_error([&] {
-            auto mem = retry_mem_error([&] {
-                    return pyopencl_call_guarded(
-                        clCreateImage2D, ctx, flags,
-                        fmt, width, height, pitch, buffer);
-                });
+    return c_handle_retry_mem_error([&] {
+            auto mem = pyopencl_call_guarded(clCreateImage2D, ctx, flags, fmt,
+                                             width, height, pitch, buf);
             *img = new_image(mem, fmt);
         });
 }
@@ -134,15 +131,13 @@ create_image_2d(clobj_t *img, clobj_t _ctx, cl_mem_flags flags,
 error*
 create_image_3d(clobj_t *img, clobj_t _ctx, cl_mem_flags flags,
                 cl_image_format *fmt, size_t width, size_t height,
-                size_t depth, size_t pitch_x, size_t pitch_y, void *buffer)
+                size_t depth, size_t pitch_x, size_t pitch_y, void *buf)
 {
     auto ctx = static_cast<context*>(_ctx);
-    return c_handle_error([&] {
-            auto mem = retry_mem_error([&] {
-                    return pyopencl_call_guarded(
-                        clCreateImage3D, ctx, flags, fmt, width,
-                        height, depth, pitch_x, pitch_y, buffer);
-                });
+    return c_handle_retry_mem_error([&] {
+            auto mem = pyopencl_call_guarded(clCreateImage3D, ctx, flags, fmt,
+                                             width, height, depth, pitch_x,
+                                             pitch_y, buf);
             *img = new_image(mem, fmt);
         });
 }
@@ -151,12 +146,12 @@ create_image_3d(clobj_t *img, clobj_t _ctx, cl_mem_flags flags,
 
 error*
 create_image_from_desc(clobj_t *img, clobj_t _ctx, cl_mem_flags flags,
-                       cl_image_format *fmt, cl_image_desc *desc, void *buffer)
+                       cl_image_format *fmt, cl_image_desc *desc, void *buf)
 {
     auto ctx = static_cast<context*>(_ctx);
     return c_handle_error([&] {
             auto mem = pyopencl_call_guarded(clCreateImage, ctx, flags, fmt,
-                                             desc, buffer);
+                                             desc, buf);
             *img = new_image(mem, fmt);
         });
 }
@@ -180,94 +175,80 @@ image__get_fill_type(clobj_t img)
 
 error*
 enqueue_read_image(clobj_t *evt, clobj_t _queue, clobj_t _mem,
-                   const size_t *_origin, size_t origin_l,
-                   const size_t *_region, size_t region_l, void *buffer,
+                   const size_t *_orig, size_t orig_l,
+                   const size_t *_reg, size_t reg_l, void *buf,
                    size_t row_pitch, size_t slice_pitch,
                    const clobj_t *_wait_for, uint32_t num_wait_for,
-                   int is_blocking, void *pyobj)
+                   int block, void *pyobj)
 {
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
     auto queue = static_cast<command_queue*>(_queue);
     auto img = static_cast<image*>(_mem);
-    ConstBuffer<size_t, 3> origin(_origin, origin_l);
-    ConstBuffer<size_t, 3> region(_region, region_l, 1);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueReadImage, queue, img,
-                        bool(is_blocking), origin, region, row_pitch,
-                        slice_pitch, buffer, wait_for,
-                        nanny_event_out(evt, pyobj));
-                });
+    ConstBuffer<size_t, 3> orig(_orig, orig_l);
+    ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueReadImage, queue, img, bool(block),
+                                  orig, reg, row_pitch, slice_pitch, buf,
+                                  wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
 error*
 enqueue_copy_image(clobj_t *evt, clobj_t _queue, clobj_t _src, clobj_t _dst,
-                   const size_t *_src_origin, size_t src_origin_l,
-                   const size_t *_dst_origin, size_t dst_origin_l,
-                   const size_t *_region, size_t region_l,
+                   const size_t *_src_orig, size_t src_orig_l,
+                   const size_t *_dst_orig, size_t dst_orig_l,
+                   const size_t *_reg, size_t reg_l,
                    const clobj_t *_wait_for, uint32_t num_wait_for)
 {
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
     auto queue = static_cast<command_queue*>(_queue);
     auto src = static_cast<image*>(_src);
     auto dst = static_cast<image*>(_dst);
-    ConstBuffer<size_t, 3> src_origin(_src_origin, src_origin_l);
-    ConstBuffer<size_t, 3> dst_origin(_dst_origin, dst_origin_l);
-    ConstBuffer<size_t, 3> region(_region, region_l, 1);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueCopyImage, queue, src, dst, src_origin,
-                        dst_origin, region, wait_for, event_out(evt));
-                });
+    ConstBuffer<size_t, 3> src_orig(_src_orig, src_orig_l);
+    ConstBuffer<size_t, 3> dst_orig(_dst_orig, dst_orig_l);
+    ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueCopyImage, queue, src, dst, src_orig,
+                                  dst_orig, reg, wait_for, event_out(evt));
         });
 }
 
 error*
 enqueue_write_image(clobj_t *evt, clobj_t _queue, clobj_t _mem,
-                    const size_t *_origin, size_t origin_l,
-                    const size_t *_region, size_t region_l,
-                    const void *buffer, size_t row_pitch, size_t slice_pitch,
+                    const size_t *_orig, size_t orig_l,
+                    const size_t *_reg, size_t reg_l,
+                    const void *buf, size_t row_pitch, size_t slice_pitch,
                     const clobj_t *_wait_for, uint32_t num_wait_for,
-                    int is_blocking, void *pyobj)
+                    int block, void *pyobj)
 {
     auto queue = static_cast<command_queue*>(_queue);
     auto img = static_cast<image*>(_mem);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    ConstBuffer<size_t, 3> origin(_origin, origin_l);
-    ConstBuffer<size_t, 3> region(_region, region_l, 1);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueWriteImage, queue, img,
-                        bool(is_blocking), origin, region, row_pitch,
-                        slice_pitch, buffer, wait_for,
-                        nanny_event_out(evt, pyobj));
-                });
+    ConstBuffer<size_t, 3> orig(_orig, orig_l);
+    ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueWriteImage, queue, img, bool(block),
+                                  orig, reg, row_pitch, slice_pitch, buf,
+                                  wait_for, nanny_event_out(evt, pyobj));
         });
 }
 
 #if PYOPENCL_CL_VERSION >= 0x1020
 error*
 enqueue_fill_image(clobj_t *evt, clobj_t _queue, clobj_t mem,
-                   const void *color, const size_t *_origin, size_t origin_l,
-                   const size_t *_region, size_t region_l,
+                   const void *color, const size_t *_orig, size_t orig_l,
+                   const size_t *_reg, size_t reg_l,
                    const clobj_t *_wait_for, uint32_t num_wait_for)
 {
     // TODO debug color
     auto queue = static_cast<command_queue*>(_queue);
     auto img = static_cast<image*>(mem);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    ConstBuffer<size_t, 3> origin(_origin, origin_l);
-    ConstBuffer<size_t, 3> region(_region, region_l, 1);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueFillImage, queue, img, color, origin, region,
-                        wait_for, event_out(evt));
-                });
+    ConstBuffer<size_t, 3> orig(_orig, orig_l);
+    ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueFillImage, queue, img, color, orig,
+                                  reg, wait_for, event_out(evt));
         });
 }
 #endif
diff --git a/src/c_wrapper/kernel.cpp b/src/c_wrapper/kernel.cpp
index d8945b00038a1a49191394d88d211ccc1d54db8b..7de0343abed37a2d56f692e11b1334f6e3e36e7b 100644
--- a/src/c_wrapper/kernel.cpp
+++ b/src/c_wrapper/kernel.cpp
@@ -147,13 +147,10 @@ enqueue_nd_range_kernel(clobj_t *evt, clobj_t _queue, clobj_t _knl,
     auto queue = static_cast<command_queue*>(_queue);
     auto knl = static_cast<kernel*>(_knl);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueNDRangeKernel, queue, knl,
-                        work_dim, global_work_offset, global_work_size,
-                        local_work_size, wait_for, event_out(evt));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueNDRangeKernel, queue, knl, work_dim,
+                                  global_work_offset, global_work_size,
+                                  local_work_size, wait_for, event_out(evt));
         });
 }
 
@@ -164,10 +161,8 @@ enqueue_task(clobj_t *evt, clobj_t _queue, clobj_t _knl,
     auto queue = static_cast<command_queue*>(_queue);
     auto knl = static_cast<kernel*>(_knl);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    return c_handle_error([&] {
-            retry_mem_error([&] {
-                    pyopencl_call_guarded(
-                        clEnqueueTask, queue, knl, wait_for, event_out(evt));
-                });
+    return c_handle_retry_mem_error([&] {
+            pyopencl_call_guarded(clEnqueueTask, queue, knl, wait_for,
+                                  event_out(evt));
         });
 }
diff --git a/src/c_wrapper/memory_map.cpp b/src/c_wrapper/memory_map.cpp
index c0332e9287de2b33f24628f4eb76b1ee1682a1b1..176027a2f7bc45debe6e1a567ef8f795925fe462 100644
--- a/src/c_wrapper/memory_map.cpp
+++ b/src/c_wrapper/memory_map.cpp
@@ -85,23 +85,20 @@ memory_map__data(clobj_t _map)
 
 error*
 enqueue_map_image(clobj_t *evt, clobj_t *map, clobj_t _queue, clobj_t _mem,
-                  cl_map_flags flags, const size_t *_origin, size_t origin_l,
-                  const size_t *_region, size_t region_l, size_t *row_pitch,
+                  cl_map_flags flags, const size_t *_orig, size_t orig_l,
+                  const size_t *_reg, size_t reg_l, size_t *row_pitch,
                   size_t *slice_pitch, const clobj_t *_wait_for,
                   uint32_t num_wait_for, int block)
 {
     auto queue = static_cast<command_queue*>(_queue);
     auto img = static_cast<image*>(_mem);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    ConstBuffer<size_t, 3> origin(_origin, origin_l);
-    ConstBuffer<size_t, 3> region(_region, region_l, 1);
-    return c_handle_error([&] {
-            void *res = retry_mem_error([&] {
-                    return pyopencl_call_guarded(
-                        clEnqueueMapImage, queue, img, bool(block), flags,
-                        origin, region, row_pitch, slice_pitch, wait_for,
-                        event_out(evt));
-                });
+    ConstBuffer<size_t, 3> orig(_orig, orig_l);
+    ConstBuffer<size_t, 3> reg(_reg, reg_l, 1);
+    return c_handle_retry_mem_error([&] {
+            void *res = pyopencl_call_guarded(
+                clEnqueueMapImage, queue, img, bool(block), flags, orig,
+                reg, row_pitch, slice_pitch, wait_for, event_out(evt));
             *map = convert_memory_map(*evt, queue, img, res);
         });
 }
@@ -115,12 +112,10 @@ enqueue_map_buffer(clobj_t *evt, clobj_t *map, clobj_t _queue, clobj_t _mem,
     auto queue = static_cast<command_queue*>(_queue);
     auto buf = static_cast<buffer*>(_mem);
     const auto wait_for = buf_from_class<event>(_wait_for, num_wait_for);
-    return c_handle_error([&] {
-            void *res = retry_mem_error([&] {
-                    return pyopencl_call_guarded(
-                        clEnqueueMapBuffer, queue, buf, bool(block),
-                        flags, offset, size, wait_for, event_out(evt));
-                });
+    return c_handle_retry_mem_error([&] {
+            void *res = pyopencl_call_guarded(
+                clEnqueueMapBuffer, queue, buf, bool(block),
+                flags, offset, size, wait_for, event_out(evt));
             *map = convert_memory_map(*evt, queue, buf, res);
         });
 }
diff --git a/src/c_wrapper/utils.h b/src/c_wrapper/utils.h
index 6bac71826085013e3bb472d47b0887e0a682f248..d500544c684e1bfd67e2ff654c683600a598da74 100644
--- a/src/c_wrapper/utils.h
+++ b/src/c_wrapper/utils.h
@@ -310,8 +310,7 @@ template<typename Buff>
 struct _ArgBufferConverter<Buff,
                            enable_if_t<Buff::arg_type == ArgType::Length> > {
     static PYOPENCL_INLINE auto
-    convert(Buff &buff)
-        -> decltype(std::make_tuple(buff.len(), buff.get()))
+    convert(Buff &buff) -> decltype(std::make_tuple(buff.len(), buff.get()))
     {
         return std::make_tuple(buff.len(), buff.get());
     }
@@ -389,8 +388,7 @@ public:
         other.m_need_cleanup = false;
     }
     PYOPENCL_INLINE auto
-    convert()
-        -> decltype(m_arg.get())
+    convert() -> decltype(m_arg.get())
     {
         return m_arg.get();
     }