Make sure the passed types are large enough.

Make sure all out parameters that are passed to functions such
as clGetDeviceInfo are large enough to contain the replies.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/clpp11.hpp b/src/clpp11.hpp
index fcb71e38..9f924a4f 100644
--- a/src/clpp11.hpp
+++ b/src/clpp11.hpp
@@ -194,7 +194,7 @@ class Device {
   }
   size_t MaxWorkGroupSize() const { return GetInfo<size_t>(CL_DEVICE_MAX_WORK_GROUP_SIZE); }
   size_t MaxWorkItemDimensions() const {
-    return GetInfo(CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS);
+    return GetInfo<cl_uint>(CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS);
   }
   std::vector<size_t> MaxWorkItemSizes() const {
     return GetInfoVector<size_t>(CL_DEVICE_MAX_WORK_ITEM_SIZES);
@@ -205,8 +205,8 @@ class Device {
   std::string Capabilities() const { return GetInfoString(CL_DEVICE_EXTENSIONS); }
   size_t CoreClock() const { return GetInfo(CL_DEVICE_MAX_CLOCK_FREQUENCY); }
   size_t ComputeUnits() const { return GetInfo(CL_DEVICE_MAX_COMPUTE_UNITS); }
-  size_t MemorySize() const { return GetInfo(CL_DEVICE_GLOBAL_MEM_SIZE); }
-  size_t MaxAllocSize() const { return GetInfo(CL_DEVICE_MAX_MEM_ALLOC_SIZE); }
+  size_t MemorySize() const { return GetInfo<cl_ulong>(CL_DEVICE_GLOBAL_MEM_SIZE); }
+  size_t MaxAllocSize() const { return GetInfo<cl_ulong>(CL_DEVICE_MAX_MEM_ALLOC_SIZE); }
   size_t MemoryClock() const { return 0; } // Not exposed in OpenCL
   size_t MemoryBusWidth() const { return 0; } // Not exposed in OpenCL
 
@@ -250,7 +250,7 @@ class Device {
   size_t GetInfo(const cl_device_info info) const {
     auto bytes = size_t{0};
     CheckError(clGetDeviceInfo(device_, info, 0, nullptr, &bytes));
-    auto result = cl_uint(0);
+    auto result = cl_ulong(0);
     CheckError(clGetDeviceInfo(device_, info, bytes, &result, nullptr));
     return static_cast<size_t>(result);
   }