================
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only \
+// RUN: -isystem %S/Inputs -verify %s
+// RUN: %clang_cc1 -triple nvptx64-nvidia-cuda -fsyntax-only \
+// RUN: -isystem %S/Inputs -fcuda-is-device -verify %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only \
+// RUN: -isystem %S/Inputs -verify=redecl -Woffload-incompatible-redeclare %s
+// RUN: %clang_cc1 -triple nvptx64-nvidia-cuda -fsyntax-only \
+// RUN: -isystem %S/Inputs -fcuda-is-device -Woffload-incompatible-redeclare
-verify=redecl %s
+
+// expected-no-diagnostics
+#include "cuda.h"
+
+__device__ void f(); // redecl-note {{previous declaration is here}}
+
+void f() {} // redecl-warning {{incompatible host/device attribute with
redeclaration: new declaration is __host__ function, old declaration is
__device__ function. It will cause warning with nvcc}}
----------------
yxsamliu wrote:
> IMO that looks like a nice "this is incompatible with X" warning like we have
> for GCC, different C/C++ versions etc., but I'm not an expert here, so maybe
> this isn't actually an incompatibility? FWIW neither the diagnostic nor your
> comment make this really clear to me. (Also I'd drop the `It will cause
> warning with nvcc` and make the flag something like `-Wnvcc-compat`)
sorry. I missed your comments. will rename the flag
https://github.com/llvm/llvm-project/pull/77359
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