[clang-tools-extra] [clang-tidy] bugprone-lambda-function-name ignore macro in captures (PR #89076)
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Wed Apr 17 07:23:25 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-tidy
Author: Congcong Cai (HerrCai0907)
<details>
<summary>Changes</summary>
Fixes: #<!-- -->89065
---
Full diff: https://github.com/llvm/llvm-project/pull/89076.diff
3 Files Affected:
- (modified) clang-tools-extra/clang-tidy/bugprone/LambdaFunctionNameCheck.cpp (+4-3)
- (modified) clang-tools-extra/docs/ReleaseNotes.rst (+4)
- (modified) clang-tools-extra/test/clang-tidy/checkers/bugprone/lambda-function-name.cpp (+1)
``````````diff
diff --git a/clang-tools-extra/clang-tidy/bugprone/LambdaFunctionNameCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/LambdaFunctionNameCheck.cpp
index 5260a8b4ecb0ba..f3dbb8d1e70286 100644
--- a/clang-tools-extra/clang-tidy/bugprone/LambdaFunctionNameCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/LambdaFunctionNameCheck.cpp
@@ -56,6 +56,8 @@ class MacroExpansionsWithFileAndLine : public PPCallbacks {
LambdaFunctionNameCheck::SourceRangeSet* SuppressMacroExpansions;
};
+AST_MATCHER(CXXMethodDecl, isInLambda) { return Node.getParent()->isLambda(); }
+
} // namespace
LambdaFunctionNameCheck::LambdaFunctionNameCheck(StringRef Name,
@@ -69,9 +71,8 @@ void LambdaFunctionNameCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
}
void LambdaFunctionNameCheck::registerMatchers(MatchFinder *Finder) {
- // Match on PredefinedExprs inside a lambda.
- Finder->addMatcher(predefinedExpr(hasAncestor(lambdaExpr())).bind("E"),
- this);
+ auto IsInsideALambda = hasAncestor(cxxMethodDecl(isInLambda()));
+ Finder->addMatcher(predefinedExpr(IsInsideALambda).bind("E"), this);
}
void LambdaFunctionNameCheck::registerPPCallbacks(
diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst
index 7095c564444fe6..d5d14cef130e97 100644
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -151,6 +151,10 @@ Changes in existing checks
<clang-tidy/checks/bugprone/inc-dec-in-conditions>` check to ignore code
within unevaluated contexts, such as ``decltype``.
+- Improved :doc:`bugprone-lambda-function-name
+ <clang-tidy/checks/bugprone/lambda-function-name>` check by ignoring
+ ``__func__`` macro in lambda captures.
+
- Improved :doc:`bugprone-non-zero-enum-to-bool-conversion
<clang-tidy/checks/bugprone/non-zero-enum-to-bool-conversion>` check by
eliminating false positives resulting from direct usage of bitwise operators
diff --git a/clang-tools-extra/test/clang-tidy/checkers/bugprone/lambda-function-name.cpp b/clang-tools-extra/test/clang-tidy/checkers/bugprone/lambda-function-name.cpp
index 936ee87a856cd2..921deecdcc5ed7 100644
--- a/clang-tools-extra/test/clang-tidy/checkers/bugprone/lambda-function-name.cpp
+++ b/clang-tools-extra/test/clang-tidy/checkers/bugprone/lambda-function-name.cpp
@@ -19,6 +19,7 @@ void Positives() {
// CHECK-MESSAGES-NO-CONFIG: :[[@LINE-1]]:8: warning: inside a lambda, '__FUNCTION__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
[] { EMBED_IN_ANOTHER_MACRO1; }();
// CHECK-MESSAGES-NO-CONFIG: :[[@LINE-1]]:8: warning: inside a lambda, '__func__' expands to the name of the function call operator; consider capturing the name of the enclosing function explicitly [bugprone-lambda-function-name]
+ [func=__func__] { func; }();
}
#define FUNC_MACRO_WITH_FILE_AND_LINE Foo(__func__, __FILE__, __LINE__)
``````````
</details>
https://github.com/llvm/llvm-project/pull/89076
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