C3848: 具有类型“const google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare”的表达式会丢失一些 const-volatile 限定符以调用“bool google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare::operator ()(const google::protobuf::FieldDescriptor *,const google::protobuf::FieldDescriptor *)”

[EaonL]

What version of protobuf and what language are you using?
Version: main，last version（v29.0-rc2 also make the bug）
Language: C++

What operating system (Linux, Windows, ...) and version?
Windows 10

What runtime / compiler are you using (e.g., python version or gcc version)
Microsofrt Visual Studio 16 2019

What did you do?
Steps to reproduce the behavior:

1. build this lib 《protobuf》

What did you expect to see
build success...

What did you see instead?
27>D:\Program Files\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(24
1,5): error MSB8066: “D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_p
rotobuf-mkdir.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_prot
obuf-download.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_prot
obuf-update.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protob
uf-patch.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protobuf-
configure.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protobuf
-build.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protobuf-in
stall.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\9b6d8d43a47d7db9d14bb709f559897f\extern_protobuf-com
plete.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\dd9531fc40ca8a1795f8a662a680d3a2\extern_protobuf.rul
e”的自定义生成已退出，代码为 1。 [D:\AI\Paddle-Lite-2.12\build.lite.x86\extern_protobuf.vcxproj]

“D:\AI\Paddle-Lite-2.12\build.lite.x86\lite\publish_inference.vcxproj”(默认目标) (1) ->
“D:\AI\Paddle-Lite-2.12\build.lite.x86\lite\publish_inference_x86_cxx_lib.vcxproj”(默认目标) (2) ->
“D:\AI\Paddle-Lite-2.12\build.lite.x86\lite\api\bundle_full_api.vcxproj”(默认目标) (3) ->
“D:\AI\Paddle-Lite-2.12\build.lite.x86\lite\api\paddle_api_full.vcxproj”(默认目标) (4) ->
“D:\AI\Paddle-Lite-2.12\build.lite.x86\lite\core\core.vcxproj”(默认目标) (6) ->
“D:\AI\Paddle-Lite-2.12\build.lite.x86\extern_protobuf.vcxproj”(默认目标) (27) ->
(CustomBuild 目标) ->
d:\Program Files\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\include\xtree(1601,1): error
C3848: 具有类型“const google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare”的表达式会丢失一些 con st-volatile 限定符以调用“bool google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare::operato
r ()(const google::protobuf::FieldDescriptor *,const google::protobuf::FieldDescriptor *)” (编译源文件 D:\AI\Paddle-L
ite-2.12\third-party\protobuf-host\src\google\protobuf\compiler\java\java_file.cc) [D:\AI\Paddle-Lite-2.12\third
-party\protobuf-host\src\extern_protobuf-build\libprotoc.vcxproj] [D:\AI\Paddle-Lite-2.12\build.lite.x86\extern_
protobuf.vcxproj]
d:\Program Files\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\include\xtree(1591,1): error
C3848: 具有类型“const google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare”的表达式会丢失一些 con st-volatile 限定符以调用“bool google::protobuf::compiler::java::anonymous-namespace'::FieldDescriptorCompare::operato
r ()(const google::protobuf::FieldDescriptor *,const google::protobuf::FieldDescriptor *)” (编译源文件 D:\AI\Paddle-L
ite-2.12\third-party\protobuf-host\src\google\protobuf\compiler\java\java_file.cc) [D:\AI\Paddle-Lite-2.12\third
-party\protobuf-host\src\extern_protobuf-build\libprotoc.vcxproj] [D:\AI\Paddle-Lite-2.12\build.lite.x86\extern_
protobuf.vcxproj]
D:\Program Files\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(
241,5): error MSB8066: “D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern
_protobuf-mkdir.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_pr
otobuf-download.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_pr
otobuf-update.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_prot
obuf-patch.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protobu
f-configure.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protob
uf-build.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\f80f93ffe1154d7538aed890d912e188\extern_protobuf-
install.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\9b6d8d43a47d7db9d14bb709f559897f\extern_protobuf-c
omplete.rule;D:\AI\Paddle-Lite-2.12\build.lite.x86\CMakeFiles\dd9531fc40ca8a1795f8a662a680d3a2\extern_protobuf.r
ule”的自定义生成已退出，代码为 1。 [D:\AI\Paddle-Lite-2.12\build.lite.x86\extern_protobuf.vcxproj]

109 个警告
3 个错误

Make sure you include information that can help us debug (full error message, exception listing, stack trace, logs).

Anything else we should know about your project / environment
instead the file： \protobuf-host\src\google\protobuf\compiler\java\java_file.cc line 68:
bool operator ()(const FieldDescriptor* f1, const FieldDescriptor* f2) {
as
bool operator ()(const FieldDescriptor* f1, const FieldDescriptor* f2) const {

[sbenzaquen]

Are you sure this is using the latest build?
The bug it talks about was fixed years ago in 01a05a5
And that file no longer uses std::set, it uses absl::btree_set, which makes the error more suspicious.