tra added a comment.
Reduced test case:
struct a {
__attribute__((device)) a(short);
__attribute__((device)) operator unsigned() const;
__attribute__((device)) operator int() const;
};
struct b {
a d;
};
void f(b g) { b e = g; }
Failure:
$ bin/clang++ -x cuda aten.cc -fsyntax-only
--cuda-path=$HOME/local/cuda-10.1 --cuda-device-only --cuda-gpu-arch=sm_60
-stdlib=libc++ -std=c++17 -ferror-limit=1
aten.cc:6:8: error: conversion from 'const a' to 'short' is ambiguous
struct b {
^
aten.cc:9:21: note: in implicit copy constructor for 'b' first required here
void f(b g) { b e = g; }
^
aten.cc:3:27: note: candidate function
__attribute__((device)) operator unsigned() const;
^
aten.cc:4:27: note: candidate function
__attribute__((device)) operator int() const;
^
aten.cc:2:34: note: passing argument to parameter here
__attribute__((device)) a(short);
^
1 error generated when compiling for sm_60.
The same code compiles fine in C++ and I would expect it to work on device side
the same way.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D79526/new/
https://reviews.llvm.org/D79526
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