[llvm-bugs] [Bug 27295] New: Giving struct with member as argument to __global__ function produces illegal memory access

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27295

            Bug ID: 27295
           Summary: Giving struct with member as argument to __global__
                    function produces illegal memory access
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: CUDA
          Assignee: unassignedclangbugs at nondot.org
          Reporter: crtrott at sandia.gov
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 16191
  --> https://llvm.org/bugs/attachment.cgi?id=16191&action=edit
Reproducer

I am giving a struct with a pointer to int as member as an argument to a global
function. When using the pointer (which was set through a cudaMalloc call) I
get an illegal memory access error. The code works fine with NVCC. The basic
pattern is:

struct Bar {
  int* ptr;
};

__global__
void foo(Bar b) {
  b.ptr[0] = 1;
}

A reproducer is attached.

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