[PATCH] D77461: [WIP][clang-tidy] Remove false positive in AvoidNonConstGlobalVariables

[Kim Viggedal via Phabricator via cfe-commits]

vingeldal updated this revision to Diff 257060.
vingeldal added a comment.

Ran automatic formatting on the patch


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77461/new/

https://reviews.llvm.org/D77461

Files:
  clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidNonConstGlobalVariablesCheck.cpp
  clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-avoid-non-const-global-variables.cpp


Index: clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-avoid-non-const-global-variables.cpp
===================================================================
--- clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-avoid-non-const-global-variables.cpp
+++ clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-avoid-non-const-global-variables.cpp
@@ -231,7 +231,8 @@
 // CHECKING AGAINST FALSE POSITIVES INSIDE FUNCTION SCOPE /////////////////////
 int main() {
   for (int i = 0; i < 3; ++i) {
+    static int staticNonConstLoopVariable = 42;
     int nonConstLoopVariable = 42;
-    nonConstInt = nonConstLoopVariable + i;
+    nonConstInt = nonConstLoopVariable + i + staticNonConstLoopVariable;
   }
 }
Index: clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidNonConstGlobalVariablesCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidNonConstGlobalVariablesCheck.cpp
+++ clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidNonConstGlobalVariablesCheck.cpp
@@ -45,11 +45,15 @@
 
   if (const auto *Variable =
           Result.Nodes.getNodeAs<VarDecl>("non-const_variable")) {
-    diag(Variable->getLocation(), "variable %0 is non-const and globally "
-                                  "accessible, consider making it const")
-        << Variable; // FIXME: Add fix-it hint to Variable
-    // Don't return early, a non-const variable may also be a pointer or
-    // reference to non-const data.
+    // To avoid warning about local variables with global storage, like static
+    // variables in a function.
+    if (!Variable->isLocalVarDecl()) {
+      diag(Variable->getLocation(), "variable %0 is non-const and globally "
+                                    "accessible, consider making it const")
+          << Variable; // FIXME: Add fix-it hint to Variable
+      // Don't return early, a non-const variable may also be a pointer or
+      // reference to non-const data.
+    }
   }
 
   if (const auto *VD =


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