https://community.intel.com/t5/Software-Archive/internal-error-bad-pointer/m-p/1004194#M31442 <P>my code is this: ---------------------------------------------------------------------------------------------- #include <IOSTREAM> class TEST{ public: double *A; public: TEST(double * _A){ A = _A; #pragma offload_transfer target(mic:0) nocopy(this : alloc_if(1) free_if(0)) in(A:length(2*3) alloc_if(1) free_if(0)) } void run(){ A[1] = 0; // double *B = A; std::cout&lt;</IOSTREAM></P> Wed, 01 Apr 2015 12:51:46 GMT yongbei_ma_ 2015-04-01T12:51:46Z https://community.intel.com/t5/Software-Archive/internal-error-bad-pointer/m-p/1004194#M31442 <P>my code is this: ---------------------------------------------------------------------------------------------- #include <IOSTREAM> class TEST{ public: double *A; public: TEST(double * _A){ A = _A; #pragma offload_transfer target(mic:0) nocopy(this : alloc_if(1) free_if(0)) in(A:length(2*3) alloc_if(1) free_if(0)) } void run(){ A[1] = 0; // double *B = A; std::cout&lt;</IOSTREAM></P> Wed, 01 Apr 2015 12:51:46 GMT https://community.intel.com/t5/Software-Archive/internal-error-bad-pointer/m-p/1004194#M31442 yongbei_ma_ 2015-04-01T12:51:46Z https://community.intel.com/t5/Software-Archive/internal-error-bad-pointer/m-p/1004195#M31443 <P>This appears to be an unintended duplicate of <A href="https://software.intel.com/en-us/forums/topic/544988" target="_blank">this post</A>. Refer to the other thread for more info.</P> Wed, 01 Apr 2015 16:59:57 GMT https://community.intel.com/t5/Software-Archive/internal-error-bad-pointer/m-p/1004195#M31443 Kevin_D_Intel 2015-04-01T16:59:57Z