codegen.cc:150:32: error: use of deleted function

[kevinyuan]

Hi,

The latest code has compilation errors with tvm/src/relay/backend/contrib/codegen_c/codegen.cc:

---

[ 90%] Building CXX object CMakeFiles/tvm.dir/src/runtime/cpu_device_api.cc.o
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc: In member function ‘void tvm::relay::contrib::CSourceCodegen::GenCFunc(const tvm::relay::Function&)’:
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:150:32: error: use of deleted function ‘tvm::relay::contrib::CodegenC::CodegenC(tvm::relay::contrib::CodegenC&&)’
auto builder = CodegenC(sid);
^
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:39:7: note: ‘tvm::relay::contrib::CodegenC::CodegenC(tvm::relay::contrib::CodegenC&&)’ is implicitly deleted because the default definition would be ill-formed:
class CodegenC : public ExprVisitor, public CodegenCBase {
^
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:39:7: error: use of deleted function ‘tvm::relay::contrib::CodegenCBase::CodegenCBase(tvm::relay::contrib::CodegenCBase&&)’
In file included from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:28:0:
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen_c.h:70:7: note: ‘tvm::relay::contrib::CodegenCBase::CodegenCBase(tvm::relay::contrib::CodegenCBase&&)’ is implicitly deleted because the default definition would be ill-formed:
class CodegenCBase {
^
/home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen_c.h:70:7: error: use of deleted function ‘std::basic_ostringstream::basic_ostringstream(const std::basic_ostringstream&)’
In file included from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20:0,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/sstream:387:11: note: ‘std::basic_ostringstream::basic_ostringstream(const std::basic_ostringstream&)’ is implicitly deleted because the default definition would be ill-formed:
class basic_ostringstream : public basic_ostream<_CharT, _Traits>
^
/usr/include/c++/4.8.2/sstream:387:11: error: use of deleted function ‘std::basic_ostream::basic_ostream(const std::basic_ostream&)’
In file included from /usr/include/c++/4.8.2/istream:39:0,
from /usr/include/c++/4.8.2/sstream:38,
from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/ostream:58:11: note: ‘std::basic_ostream::basic_ostream(const std::basic_ostream&)’ is implicitly deleted because the default definition would be ill-formed:
class basic_ostream : virtual public basic_ios<_CharT, _Traits>
^
/usr/include/c++/4.8.2/ostream:58:11: error: use of deleted function ‘std::basic_ios::basic_ios(const std::basic_ios&)’
In file included from /usr/include/c++/4.8.2/ios:44:0,
from /usr/include/c++/4.8.2/istream:38,
from /usr/include/c++/4.8.2/sstream:38,
from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:

/usr/include/c++/4.8.2/bits/basic_ios.h:66:11: note: ‘std::basic_ios::basic_ios(const std::basic_ios&)’ is implicitly deleted because the default definition would be ill-formed:
class basic_ios : public ios_base
^
In file included from /usr/include/c++/4.8.2/ios:42:0,
from /usr/include/c++/4.8.2/istream:38,
from /usr/include/c++/4.8.2/sstream:38,
from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/bits/ios_base.h:786:5: error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private
ios_base(const ios_base&);
^
In file included from /usr/include/c++/4.8.2/ios:44:0,
from /usr/include/c++/4.8.2/istream:38,
from /usr/include/c++/4.8.2/sstream:38,
from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/bits/basic_ios.h:66:11: error: within this context
class basic_ios : public ios_base
^
In file included from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20:0,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/sstream:387:11: error: use of deleted function ‘std::basic_ios::basic_ios(const std::basic_ios&)’
class basic_ostringstream : public basic_ostream<_CharT, _Traits>
^
/usr/include/c++/4.8.2/sstream:387:11: error: use of deleted function ‘std::basic_stringbuf::basic_stringbuf(const std::basic_stringbuf&)’
/usr/include/c++/4.8.2/sstream:64:11: note: ‘std::basic_stringbuf::basic_stringbuf(const std::basic_stringbuf&)’ is implicitly deleted because the default definition would be ill-formed:
class basic_stringbuf : public basic_streambuf<_CharT, _Traits>
^
In file included from /usr/include/c++/4.8.2/ios:43:0,
from /usr/include/c++/4.8.2/istream:38,
from /usr/include/c++/4.8.2/sstream:38,
from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/streambuf:802:7: error: ‘std::basic_streambuf<_CharT, _Traits>::basic_streambuf(const std::basic_streambuf<_CharT, _Traits>&) [with _CharT = char; _Traits = std::char_traits]’ is private
basic_streambuf(const basic_streambuf& __sb)
^
In file included from /home/kevinyuan/dev/tvm/3rdparty/dmlc-core/include/dmlc/logging.h:20:0,
from /home/kevinyuan/dev/tvm/include/tvm/node/functor.h:26,
from /home/kevinyuan/dev/tvm/include/tvm/relay/expr_functor.h:28,
from /home/kevinyuan/dev/tvm/src/relay/backend/contrib/codegen_c/codegen.cc:19:
/usr/include/c++/4.8.2/sstream:64:11: error: within this context
class basic_stringbuf : public basic_streambuf<_CharT, _Traits>
^
[ 91%] Building CXX object CMakeFiles/tvm.dir/src/runtime/dso_library.cc.o

make[2]: *** [CMakeFiles/tvm.dir/src/relay/backend/contrib/codegen_c/codegen.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/tvm.dir/all] Error 2
make: *** [all] Error 2

[kevinyuan]

Not sure if it's correct, but I just adding line 18 to exclude the codegen.cc from default compilation.

18 if(USE_DNNL_CODEGEN STREQUAL "ON")
19 file(GLOB CSOURCE_RELAY_CONTRIB_SRC src/relay/backend/contrib/codegen_c/codegen.cc)
20 list(APPEND COMPILER_SRCS ${CSOURCE_RELAY_CONTRIB_SRC})
21 endif()
22

[tqchen]

cc @zhiics @comaniac

[comaniac]

According to this post, it seems like we triggered the stream move constructor that has not yet supported in gcc 4.8. We'll try to find out the root cause, although we don't have gcc 4.8 to reproduce the issue. The most efficient solution would be upgrading gcc version I think.

btw, the solution @kevinyuan proposed could work, but it's just a workaround.

[tqchen]

Given that we do not really have to move the code generator class, I would say we can simply disable copy and move. If we need to move it, consider wrap it in an unique_ptr

[zhiics]

copy constructor is triggered by

https://github.com/apache/incubator-tvm/blob/227c7af4464a03b42d7e2fa0949621833137cca2/src/relay/backend/contrib/codegen_c/codegen.cc#L150

This should be fixed by #4597