PiotrZSL created this revision.
Herald added subscribers: carlosgalvezp, xazax.hun.
Herald added a reviewer: njames93.
Herald added a project: All.
PiotrZSL requested review of this revision.
Herald added a project: clang-tools-extra.
Herald added a subscriber: cfe-commits.
Added option to ignore virtual methods in this check.
This allows to quickly get rid of big number of
potentialy false-positive issues without inserting
not-needed comments.
Fixes #55665.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D147918
Files:
clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.h
clang-tools-extra/docs/ReleaseNotes.rst
clang-tools-extra/docs/clang-tidy/checks/misc/unused-parameters.rst
clang-tools-extra/test/clang-tidy/checkers/misc/unused-parameters-virtual.cpp
Index: clang-tools-extra/test/clang-tidy/checkers/misc/unused-parameters-virtual.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/misc/unused-parameters-virtual.cpp
@@ -0,0 +1,20 @@
+// RUN: %check_clang_tidy %s misc-unused-parameters %t -- \
+// RUN: -config="{CheckOptions: [{key: misc-unused-parameters.IgnoreVirtual, value: true}]}" --
+
+struct Class {
+ int f(int foo) {
+ // CHECK-MESSAGES: :[[@LINE-1]]:13: warning: parameter 'foo' is unused [misc-unused-parameters]
+ // CHECK-FIXES: {{^ }}int f(int /*foo*/) {{{$}}
+ return 5;
+ }
+
+ virtual int f2(int foo) {
+ return 5;
+ }
+};
+
+struct Derived : Class {
+ int f2(int foo) {
+ return 5;
+ }
+};
Index: clang-tools-extra/docs/clang-tidy/checks/misc/unused-parameters.rst
===================================================================
--- clang-tools-extra/docs/clang-tidy/checks/misc/unused-parameters.rst
+++ clang-tools-extra/docs/clang-tidy/checks/misc/unused-parameters.rst
@@ -40,3 +40,8 @@
constructors - no constructor initializers). When the function body is empty,
an unused parameter is unlikely to be unnoticed by a human reader, and
there's basically no place for a bug to hide.
+
+.. option:: IgnoreVirtual
+
+ Determines whether virtual method parameters should be inspected.
+ Set to `true` to ignore them. Default is `false`.
Index: clang-tools-extra/docs/ReleaseNotes.rst
===================================================================
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -220,6 +220,10 @@
<clang-tidy/checks/misc/definitions-in-headers>` to avoid warning on
declarations inside anonymous namespaces.
+- Improved :doc:`misc-unused-parameters
+ <clang-tidy/checks/misc/unused-parameters>` check with new `IgnoreVirtual`
+ option to optionally ignore virtual methods (default `false`).
+
- Deprecated check-local options `HeaderFileExtensions`
in :doc:`misc-unused-using-decls
<clang-tidy/checks/misc/unused-using-decls>` check.
@@ -302,8 +306,8 @@
``DISABLED_`` in the test suite name.
- Improved :doc:`modernize-concat-nested-namespaces
- <clang-tidy/checks/modernize/concat-nested-namespaces>` to fix incorrect fixes when
- using macro between namespace declarations and false positive when using namespace
+ <clang-tidy/checks/modernize/concat-nested-namespaces>` to fix incorrect fixes when
+ using macro between namespace declarations and false positive when using namespace
with attributes.
- Fixed a false positive in :doc:`performance-no-automatic-move
Index: clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.h
+++ clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.h
@@ -25,6 +25,7 @@
private:
const bool StrictMode;
+ const bool IgnoreVirtual;
class IndexerVisitor;
std::unique_ptr<IndexerVisitor> Indexer;
Index: clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
+++ clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
@@ -123,10 +123,12 @@
UnusedParametersCheck::UnusedParametersCheck(StringRef Name,
ClangTidyContext *Context)
: ClangTidyCheck(Name, Context),
- StrictMode(Options.getLocalOrGlobal("StrictMode", false)) {}
+ StrictMode(Options.getLocalOrGlobal("StrictMode", false)),
+ IgnoreVirtual(Options.get("IgnoreVirtual", false)) {}
void UnusedParametersCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
Options.store(Opts, "StrictMode", StrictMode);
+ Options.store(Opts, "IgnoreVirtual", IgnoreVirtual);
}
void UnusedParametersCheck::warnOnUnusedParameter(
@@ -177,7 +179,8 @@
if (!Function->hasWrittenPrototype() || Function->isTemplateInstantiation())
return;
if (const auto *Method = dyn_cast<CXXMethodDecl>(Function))
- if (Method->isLambdaStaticInvoker())
+ if (Method->isLambdaStaticInvoker() ||
+ (IgnoreVirtual && Method->isVirtual()))
return;
for (unsigned I = 0, E = Function->getNumParams(); I != E; ++I) {
const auto *Param = Function->getParamDecl(I);
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
