https://github.com/Pask00 created
https://github.com/llvm/llvm-project/pull/101640
`getDirectCallee()` may return a null pointer if the callee is not a
`FunctionDecl` (for example when using function pointers), this requires to use
`dyn_cast_or_null` instead of `dyn_cast`.
>From 7d1263ad9c72b638d4624173b128d24b1a4317a1 Mon Sep 17 00:00:00 2001
From: Pasquale Riello <pas.rie...@gmail.com>
Date: Fri, 2 Aug 2024 08:59:07 +0000
Subject: [PATCH] [clang][dataflow] Fix casting in `ChromiumCheckModel`.
`getDirectCallee()` may return a null pointer if the callee is not a
`FunctionDecl` (for example when using function pointers), this requires to use
`dyn_cast_or_null` instead of `dyn_cast`.
---
clang/lib/Analysis/FlowSensitive/Models/ChromiumCheckModel.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/lib/Analysis/FlowSensitive/Models/ChromiumCheckModel.cpp
b/clang/lib/Analysis/FlowSensitive/Models/ChromiumCheckModel.cpp
index 5ac71e1d6bf64..27a624c61c7f2 100644
--- a/clang/lib/Analysis/FlowSensitive/Models/ChromiumCheckModel.cpp
+++ b/clang/lib/Analysis/FlowSensitive/Models/ChromiumCheckModel.cpp
@@ -56,7 +56,7 @@ bool ChromiumCheckModel::transfer(const CFGElement &Element,
Environment &Env) {
return false;
auto Stmt = CS->getStmt();
if (const auto *Call = dyn_cast<CallExpr>(Stmt)) {
- if (const auto *M = dyn_cast<CXXMethodDecl>(Call->getDirectCallee())) {
+ if (const auto *M =
dyn_cast_or_null<CXXMethodDecl>(Call->getDirectCallee())) {
if (isCheckLikeMethod(CheckDecls, *M)) {
// Mark this branch as unreachable.
Env.assume(Env.arena().makeLiteral(false));
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