Fix compile warnings for CLANG compiler

1.fix data structure redefine warnings.
2.fix 'data' with variable sized type 'union<*>' not at the end of a class warning(in immediate.hpp).
3.fix implicitly conversion warning.
4.fix explicitly assigning a variable type warning.
5.fix comparison of unsigned expression < 0 is always false warning(in cl_api.c).

Signed-off-by: Lv Meng <meng.lv@intel.com>
Reviewed-by: "Song, Ruiling" <ruiling.song@intel.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/utests/utest_helper.cpp b/utests/utest_helper.cpp
index 90cd11ed..b57b8dc0 100644
--- a/utests/utest_helper.cpp
+++ b/utests/utest_helper.cpp
@@ -537,12 +537,19 @@ int *cl_read_bmp(const char *filename, int *width, int *height)
   char magic[2];
   int ret;
   ret = fread(&magic[0], 1, 2, fp);
-  ret = ret;
-  assert(2 == ret);
+  if(2 != ret){
+    fclose(fp);
+    free(bmppath);
+    return NULL;
+  }
   assert(magic[0] == 'B' && magic[1] == 'M');
 
   ret = fread(&hdr, sizeof(hdr), 1, fp);
-  assert(1 == ret);
+  if(1 != ret){
+    fclose(fp);
+    free(bmppath);
+    return NULL;
+  }
 
   assert(hdr.width > 0 && hdr.height > 0 && hdr.nplanes == 1 && hdr.compression == 0);