:Reduce warning in OpenCL SDK (#74)

lib/src/Utils/File.c

@@ -34,11 +34,19 @@ char *cl_util_read_text_file(const char *const filename, size_t *const length,
  } \
  } while (0)
 
+#ifndef _WIN32
+#define fopen_s(fp, fmt, mode) \
+ ({ \
+ *(fp) = fopen((fmt), (mode)); \
+ (*(fp)) ? 0 : -1; \
+ })
+#endif
+
  /* File name can not be NULL. */
  IF_ERR(!filename, CL_INVALID_ARG_VALUE, end);
 
  /* Open file. */
- IF_ERR(!(in = fopen(filename, "r")), CL_INVALID_VALUE, end);
+ IF_ERR((fopen_s(&in, filename, "r") != 0), CL_INVALID_VALUE, end);
 
  /* A read error already occurred? */
  IF_ERR(ferror(in), CL_UTIL_FILE_OPERATION_ERROR, fl);
@@ -116,7 +124,7 @@ unsigned char *cl_util_read_binary_file(const char *const filename,
  IF_ERR(!filename, CL_INVALID_ARG_VALUE, end);
 
  /* Open file. */
- IF_ERR(!(in = fopen(filename, "rb")), CL_INVALID_VALUE, end);
+ IF_ERR((fopen_s(&in, filename, "rb") != 0), CL_INVALID_VALUE, end);
 
  /* A read error already occurred? */
  IF_ERR(ferror(in), CL_UTIL_FILE_OPERATION_ERROR, fl);
@@ -236,8 +244,8 @@ cl_int cl_util_write_binaries(const cl_program program,
  name_data);
 
  // write the binary to the output file
- FILE *f = fopen(filename, "wb");
- if (f != NULL)
+ FILE *f = NULL;
+ if (fopen_s(&f, filename, "wb") != 0)
  {
  if (fwrite(binaries_ptr[i], sizeof(unsigned char), binaries_size[i],
  f)