https://github.com/Decodetalkers updated https://github.com/llvm/llvm-project/pull/200001
>From 29f57ca51f4adab786cc3c60c924a97a2e058b1c Mon Sep 17 00:00:00 2001 From: ShootingStarDragons <[email protected]> Date: Fri, 5 Jun 2026 21:48:39 +0900 Subject: [PATCH 1/2] feat: remove unsupported compile options when driver detects them and log the unsupported options to the editor --- clang-tools-extra/clangd/CompileCommands.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/clang-tools-extra/clangd/CompileCommands.cpp b/clang-tools-extra/clangd/CompileCommands.cpp index 4eda330716f21..f8bc9a9ca81fd 100644 --- a/clang-tools-extra/clangd/CompileCommands.cpp +++ b/clang-tools-extra/clangd/CompileCommands.cpp @@ -273,6 +273,19 @@ void CommandMangler::operator()(tooling::CompileCommand &Command, SawInput(Cmd[I]); Cmd.resize(DashDashIndex); } + + llvm::SmallVector<const char *, 16> UnknownArgs; + + for (auto *UnknownArg : ArgList.filtered(options::OPT_UNKNOWN)) { + UnknownArgs.push_back(UnknownArg->getValue()); + IndicesToDrop.push_back(UnknownArg->getIndex()); + } + + if (!UnknownArgs.empty()) { + log("Warning: detected unsupported options '{0}'", + llvm::join(UnknownArgs, ", ")); + } + llvm::sort(IndicesToDrop); for (unsigned Idx : llvm::reverse(IndicesToDrop)) // +1 to account for the executable name in Cmd[0] that >From 4a9c2a8e6229ed0a1c4c261e090089074b6742b5 Mon Sep 17 00:00:00 2001 From: ShootingStarDragons <[email protected]> Date: Fri, 5 Jun 2026 23:47:13 +0900 Subject: [PATCH 2/2] chore: add unit test for unknown flags drop --- .../clangd/unittests/CompileCommandsTests.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp b/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp index 0c1e0348f68a5..228a4da6969ce 100644 --- a/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp +++ b/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp @@ -525,6 +525,17 @@ TEST(CommandMangler, RespectsOriginalSysroot) { Not(HasSubstr(testPath("fake/sysroot")))); } } +TEST(CommandMangler, ClangUnknownArgs) { + // Check that clang++ will drop unknown flags + const auto Mangler = CommandMangler::forTests(); + tooling::CompileCommand Cmd; + Cmd.CommandLine = {"clang++", "-std=c++23", "--unknown-flag", + "--unknown-option=abcd"}; + Mangler(Cmd, "foo.cc"); + EXPECT_THAT(Cmd.CommandLine, Not(Contains("--unknown-flag"))); + EXPECT_THAT(Cmd.CommandLine, Not(Contains("--unknown-option=abcd"))); + EXPECT_THAT(Cmd.CommandLine, Contains("-std=c++23")); +} TEST(CommandMangler, StdLatestFlag) { const auto Mangler = CommandMangler::forTests(); _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
