https://github.com/soukatch updated
https://github.com/llvm/llvm-project/pull/91675
>From 4ed555c81ae5b773361da22c0736f82fbf14c90d Mon Sep 17 00:00:00 2001
From: Andrew Sukach <andrewsuk...@gmail.com>
Date: Thu, 9 May 2024 18:49:41 -0400
Subject: [PATCH] [clang][static analyzer] ignore try statements in dead code
checker
---
.../Checkers/UnreachableCodeChecker.cpp | 4 +++-
.../Analysis/unreachable-code-exceptions.cpp | 17 +++++++++++++++++
2 files changed, 20 insertions(+), 1 deletion(-)
create mode 100644 clang/test/Analysis/unreachable-code-exceptions.cpp
diff --git a/clang/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
b/clang/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
index d24a124f5ffee..7ce9a5b5bb6dc 100644
--- a/clang/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/UnreachableCodeChecker.cpp
@@ -159,6 +159,8 @@ void UnreachableCodeChecker::checkEndAnalysis(ExplodedGraph
&G,
SL = DL.asLocation();
if (SR.isInvalid() || !SL.isValid())
continue;
+ if (isa<CXXTryStmt>(S))
+ continue;
}
else
continue;
@@ -254,4 +256,4 @@ void ento::registerUnreachableCodeChecker(CheckerManager
&mgr) {
bool ento::shouldRegisterUnreachableCodeChecker(const CheckerManager &mgr) {
return true;
-}
+}
\ No newline at end of file
diff --git a/clang/test/Analysis/unreachable-code-exceptions.cpp
b/clang/test/Analysis/unreachable-code-exceptions.cpp
new file mode 100644
index 0000000000000..db4c87bc3bad6
--- /dev/null
+++ b/clang/test/Analysis/unreachable-code-exceptions.cpp
@@ -0,0 +1,17 @@
+// RUN: %clang_analyze_cc1 -verify %s -fcxx-exceptions -fexceptions
-analyzer-checker=core -analyzer-checker=alpha.deadcode.UnreachableCode
+
+// expected-no-diagnostics
+
+class BaseException {};
+
+class DerivedException : public BaseException {};
+
+void foo();
+
+void f4() {
+ try {
+ foo();
+ } catch (BaseException &b) {
+ } catch (DerivedException &d) {
+ }
+}
\ No newline at end of file
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