[Lldb-commits] [lldb] [lldb] Add lldb-mcp scaffolding (PR #155708)

LLVM Continuous Integration via lldb-commits lldb-commits at lists.llvm.org
Wed Aug 27 16:27:14 PDT 2025 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `cross-project-tests-sie-ubuntu` running on `doug-worker-1a` while building `lldb` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/181/builds/26803

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
83.627 [212/8/5209] Building CXX object tools/llvm-rc/CMakeFiles/llvm-rc.dir/ResourceScriptCppFilter.cpp.o
83.635 [211/8/5210] Building CXX object tools/llvm-rc/CMakeFiles/llvm-rc.dir/ResourceScriptParser.cpp.o
83.644 [210/8/5211] Building CXX object tools/llvm-rc/CMakeFiles/llvm-rc.dir/ResourceScriptStmt.cpp.o
83.652 [209/8/5212] Building CXX object tools/llvm-rc/CMakeFiles/llvm-rc.dir/ResourceScriptToken.cpp.o
83.660 [208/8/5213] Building CXX object tools/llvm-rc/CMakeFiles/llvm-rc.dir/llvm-rc-driver.cpp.o
83.662 [207/8/5214] Building Opts.inc...
83.682 [206/8/5215] Building CXX object tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/ARMWinEHPrinter.cpp.o
83.707 [205/8/5216] Building CXX object tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/COFFDumper.cpp.o
83.727 [204/8/5217] Building CXX object tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/COFFImportDumper.cpp.o
83.741 [203/8/5218] Building CXX object tools/lldb/tools/lldb-mcp/CMakeFiles/lldb-mcp.dir/lldb-mcp.cpp.o
FAILED: tools/lldb/tools/lldb-mcp/CMakeFiles/lldb-mcp.dir/lldb-mcp.cpp.o 
/opt/ccache/bin/g++ -DGTEST_HAS_RTTI=0 -DHAVE_ROUND -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/tools/lldb/tools/lldb-mcp -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/tools/lldb/include -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/include -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/include -I/usr/include/python3.8 -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/../clang/include -I/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/tools/lldb/../clang/include -isystem /usr/include/libxml2 -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -Wno-unknown-pragmas -Wno-strict-aliasing -Wno-stringop-truncation -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT tools/lldb/tools/lldb-mcp/CMakeFiles/lldb-mcp.dir/lldb-mcp.cpp.o -MF tools/lldb/tools/lldb-mcp/CMakeFiles/lldb-mcp.dir/lldb-mcp.cpp.o.d -o tools/lldb/tools/lldb-mcp/CMakeFiles/lldb-mcp.dir/lldb-mcp.cpp.o -c /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp
/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp: In function ‘int main(int, char**)’:
/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:66:60: error: ‘MCPTransport’ is not a member of ‘lldb_protocol::mcp’; did you mean ‘Transport’?
   66 |   auto transport_up = std::make_unique<lldb_protocol::mcp::MCPTransport>(
      |                                                            ^~~~~~~~~~~~
      |                                                            Transport
/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:68:72: error: no matching function for call to ‘make_unique<<expression error> >(lldb::IOObjectSP&, lldb::IOObjectSP&, std::string, main(int, char**)::<lambda(llvm::StringRef)>)’
   68 |       [&](llvm::StringRef message) { llvm::errs() << message << '\n'; });
      |                                                                        ^
In file included from /usr/include/c++/9/memory:80,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/include/llvm/ADT/STLExtras.h:37,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/include/llvm/Support/FormatProviders.h:17,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/lldb-private-enumerations.h:15,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/lldb-private.h:12,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/Host/Terminal.h:12,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/Host/File.h:13,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:10:
/usr/include/c++/9/bits/unique_ptr.h:856:5: note: candidate: ‘template<class _Tp, class ... _Args> typename std::_MakeUniq<_Tp>::__single_object std::make_unique(_Args&& ...)’
  856 |     make_unique(_Args&&... __args)
      |     ^~~~~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:856:5: note:   template argument deduction/substitution failed:
/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:68:72: error: template argument 1 is invalid
   68 |       [&](llvm::StringRef message) { llvm::errs() << message << '\n'; });
      |                                                                        ^
In file included from /usr/include/c++/9/memory:80,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/include/llvm/ADT/STLExtras.h:37,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/llvm/include/llvm/Support/FormatProviders.h:17,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/lldb-private-enumerations.h:15,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/lldb-private.h:12,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/Host/Terminal.h:12,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/include/lldb/Host/File.h:13,
                 from /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:10:
/usr/include/c++/9/bits/unique_ptr.h:862:5: note: candidate: ‘template<class _Tp> typename std::_MakeUniq<_Tp>::__array std::make_unique(std::size_t)’
  862 |     make_unique(size_t __num)
      |     ^~~~~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:862:5: note:   template argument deduction/substitution failed:
/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/lldb/tools/lldb-mcp/lldb-mcp.cpp:68:72: error: template argument 1 is invalid
   68 |       [&](llvm::StringRef message) { llvm::errs() << message << '\n'; });

```

</details>

https://github.com/llvm/llvm-project/pull/155708

More information about the lldb-commits mailing list