Address anonymous union initialization when extensions are disabled. (#257)

Author: Kerilk

loader/icd.h

@@ -181,6 +181,13 @@ void khrIcdContextPropertiesGetPlatform(
     const cl_context_properties *properties, 
     cl_platform_id *outPlatform);
 
+// condition anonyous union initialization to usage
+#if __CL_HAS_ANON_STRUCT__
+#define ICD_ANON_UNION_INIT_MEMBER(a) {a}
+#else
+#define ICD_ANON_UNION_INIT_MEMBER(a) a
+#endif
+
 // internal tracing macros
 #define KHR_ICD_TRACE(...) \
 do \

loader/icd_dispatch_generated.c

@@ -6825,7 +6825,7 @@ static cl_int CL_API_CALL clGetKernelSubGroupInfoKHR_disp(
 
 #if defined(CL_ENABLE_LAYERS)
 struct _cl_icd_dispatch khrMasterDispatch = {
-    {&clGetPlatformIDs_disp},
+    ICD_ANON_UNION_INIT_MEMBER(&clGetPlatformIDs_disp),
     &clGetPlatformInfo_disp,
     &clGetDeviceIDs_disp,
     &clGetDeviceInfo_disp,
@@ -6856,7 +6856,7 @@ struct _cl_icd_dispatch khrMasterDispatch = {
     &clRetainProgram_disp,
     &clReleaseProgram_disp,
     &clBuildProgram_disp,
-    {&clUnloadCompiler_disp},
+    ICD_ANON_UNION_INIT_MEMBER(&clUnloadCompiler_disp),
     &clGetProgramInfo_disp,
     &clGetProgramBuildInfo_disp,
     &clCreateKernel_disp,

scripts/icd_dispatch_generated.c.mako

@@ -280,7 +280,7 @@ ${("CL_API_ENTRY", "static")[disp]} ${api.RetType} CL_API_CALL ${api.Name + ("",
 %endfor
 #if defined(CL_ENABLE_LAYERS)
 struct _cl_icd_dispatch khrMasterDispatch = {
-    {&clGetPlatformIDs_disp},
+    ICD_ANON_UNION_INIT_MEMBER(&clGetPlatformIDs_disp),
     &clGetPlatformInfo_disp,
     &clGetDeviceIDs_disp,
     &clGetDeviceInfo_disp,
@@ -311,7 +311,7 @@ struct _cl_icd_dispatch khrMasterDispatch = {
     &clRetainProgram_disp,
     &clReleaseProgram_disp,
     &clBuildProgram_disp,
-    {&clUnloadCompiler_disp},
+    ICD_ANON_UNION_INIT_MEMBER(&clUnloadCompiler_disp),
     &clGetProgramInfo_disp,
     &clGetProgramBuildInfo_disp,
     &clCreateKernel_disp,