[clang-tools-extra] [clangd] Improve robustness when clang-tidy check names contain leading spaces. (PR #109421)
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Fri Sep 20 06:34:45 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-tools-extra
@llvm/pr-subscribers-clangd
Author: Haojian Wu (hokein)
<details>
<summary>Changes</summary>
The current logic assumes that check names do not have leading spaces.
In cases like "-*, clang-diagnostic*", when processing the second check " clang-diagnostics-*" (with a leading space), the check fails on `CDPrefix.starts_with(Check)`, resulting in all diagnostics remaining disabled.
---
Full diff: https://github.com/llvm/llvm-project/pull/109421.diff
2 Files Affected:
- (modified) clang-tools-extra/clangd/ParsedAST.cpp (+2)
- (modified) clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp (+4)
``````````diff
diff --git a/clang-tools-extra/clangd/ParsedAST.cpp b/clang-tools-extra/clangd/ParsedAST.cpp
index 4491be9aa0362b..5cf1691ce39617 100644
--- a/clang-tools-extra/clangd/ParsedAST.cpp
+++ b/clang-tools-extra/clangd/ParsedAST.cpp
@@ -280,6 +280,8 @@ class TidyDiagnosticGroups {
llvm::StringRef Check;
while (!Checks.empty()) {
std::tie(Check, Checks) = Checks.split(',');
+ Check = Check.trim();
+
if (Check.empty())
continue;
diff --git a/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp b/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
index 096f77e414f5a5..efb2e5ed2fbe1d 100644
--- a/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
@@ -748,6 +748,10 @@ TEST(DiagnosticTest, ClangTidyEnablesClangWarning) {
TU.ExtraArgs = {"-Wunused"};
TU.ClangTidyProvider = addClangArgs({"-Wno-unused"}, {});
EXPECT_THAT(TU.build().getDiagnostics(), IsEmpty());
+
+ TU.ExtraArgs = {"-Wno-unused"};
+ TU.ClangTidyProvider = addClangArgs({"-Wunused"}, {"-*, clang-diagnostic-*"});
+ EXPECT_THAT(TU.build().getDiagnostics(), SizeIs(1));
}
TEST(DiagnosticTest, LongFixMessages) {
``````````
</details>
https://github.com/llvm/llvm-project/pull/109421
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