Developer Guide and Reference

  • 2022.2
  • 09/08/2022
  • Public Content



The template argument of the
could not be deduced. You need to update this code.

Detailed Help

This warning is generated when the template argument could not be deduced by the Intel® DPC++ Compatibility Tool because the variable of this type was not used directly in the code. The Intel® DPC++ Compatibility Tool inserts “dpct_placeholder”, instead of type, in such cases.

Suggestions to Fix

Replace the “dpct_placeholder” with the real argument.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at