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1// RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -verify %s2// RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fcuda-is-device -verify %s3 4// RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fgpu-rdc -verify=rdc %s5// RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fcuda-is-device -fgpu-rdc -verify=rdc %s6 7// Most of these declarations are fine in separate compilation mode.8 9#include "Inputs/cuda.h"10 11__device__ void foo() {12 extern __shared__ int x; // expected-error {{__shared__ variable 'x' cannot be 'extern'}}13 extern __shared__ int arr[]; // ok14 extern __shared__ int arr0[0]; // expected-error {{__shared__ variable 'arr0' cannot be 'extern'}}15 extern __shared__ int arr1[1]; // expected-error {{__shared__ variable 'arr1' cannot be 'extern'}}16 extern __shared__ int* ptr ; // expected-error {{__shared__ variable 'ptr' cannot be 'extern'}}17}18 19__host__ __device__ void bar() {20 extern __shared__ int arr[]; // ok21 extern __shared__ int arr0[0]; // expected-error {{__shared__ variable 'arr0' cannot be 'extern'}}22 extern __shared__ int arr1[1]; // expected-error {{__shared__ variable 'arr1' cannot be 'extern'}}23 extern __shared__ int* ptr ; // expected-error {{__shared__ variable 'ptr' cannot be 'extern'}}24}25 26extern __shared__ int global; // expected-error {{__shared__ variable 'global' cannot be 'extern'}}27extern __shared__ int global_arr[]; // ok28extern __shared__ int global_arr1[1]; // expected-error {{__shared__ variable 'global_arr1' cannot be 'extern'}}29 30// Check that, iff we're not in rdc mode, extern __shared__ can appear in an31// anonymous namespace / in a static function without generating a warning32// about a variable with internal linkage but no definition33// (-Wundefined-internal).34namespace {35extern __shared__ int global_arr[]; // rdc-warning {{has internal linkage but is not defined}}36__global__ void in_anon_ns() {37 extern __shared__ int local_arr[]; // rdc-warning {{has internal linkage but is not defined}}38 39 // Touch arrays to generate the warning.40 local_arr[0] = 0; // rdc-note {{used here}}41 global_arr[0] = 0; // rdc-note {{used here}}42}43} // namespace44