Author: Nathan James
Date: 2022-09-24T18:29:19+01:00
New Revision: 8c783b8ec78ec857e446a89a35463baed8026f40

URL: 
https://github.com/llvm/llvm-project/commit/8c783b8ec78ec857e446a89a35463baed8026f40
DIFF: 
https://github.com/llvm/llvm-project/commit/8c783b8ec78ec857e446a89a35463baed8026f40.diff

LOG: [clang-tidy] Fix a false positive in readability-simplify-boolean-expr

Reviewed By: LegalizeAdulthood

Differential Revision: https://reviews.llvm.org/D134590

Added: 
    

Modified: 
    clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
    
clang-tools-extra/test/clang-tidy/checkers/readability/simplify-bool-expr-chained-conditional-return.cpp

Removed: 
    


################################################################################
diff  --git 
a/clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp 
b/clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
index 8ae990a929dfd..afb4a1044a79a 100644
--- a/clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp
@@ -472,8 +472,8 @@ class SimplifyBooleanExprCheck::Visitor : public 
RecursiveASTVisitor<Visitor> {
               checkSingleStatement(If->getThen(), parseReturnLiteralBool);
           if (ThenReturnBool &&
               ThenReturnBool.Bool != TrailingReturnBool.Bool) {
-            if (Check->ChainedConditionalReturn ||
-                (!PrevIf && If->getElse() == nullptr)) {
+            if ((Check->ChainedConditionalReturn || !PrevIf) &&
+                If->getElse() == nullptr) {
               Check->replaceCompoundReturnWithCondition(
                   Context, cast<ReturnStmt>(*Second), TrailingReturnBool.Bool,
                   If, ThenReturnBool.Item);

diff  --git 
a/clang-tools-extra/test/clang-tidy/checkers/readability/simplify-bool-expr-chained-conditional-return.cpp
 
b/clang-tools-extra/test/clang-tidy/checkers/readability/simplify-bool-expr-chained-conditional-return.cpp
index 7e97e9f717fbf..ff50528c215f4 100644
--- 
a/clang-tools-extra/test/clang-tidy/checkers/readability/simplify-bool-expr-chained-conditional-return.cpp
+++ 
b/clang-tools-extra/test/clang-tidy/checkers/readability/simplify-bool-expr-chained-conditional-return.cpp
@@ -92,3 +92,14 @@ bool complex_chained_if_return_return_negated(int i) {
 // CHECK-FIXES: {{^}}  }{{$}}
 // CHECK-FIXES: {{^  return i <= 10;$}}
 // CHECK-FIXES: {{^}$}}
+
+
+bool PR57819(int x) {
+  // False positive introduced in clang-tidy-15
+  // Expect no warning here.
+  if (x > 0)
+    return false;
+  else {
+  }
+  return true;
+}


        
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