https://github.com/martinboehme created
https://github.com/llvm/llvm-project/pull/85072
I'm working on an upcoming change that will improve the semantics of
`Environment::GetResultObjectLocation()` (see the FIXME in the method comment),
and this patch improves the test coverage for this change.
>From a9193ba0d2a0d4ed3dfd1e35b836a1629aa9a731 Mon Sep 17 00:00:00 2001
From: Martin Braenne <mboe...@google.com>
Date: Wed, 13 Mar 2024 13:18:16 +0000
Subject: [PATCH] [clang][dataflow] Add a test for result object location on
`CXXDefaultArgExpr`.
I'm working on an upcoming change that will improve the semantics of
`Environment::GetResultObjectLocation()` (see the FIXME in the method comment),
and this patch improves the test coverage for this change.
---
.../Analysis/FlowSensitive/TransferTest.cpp | 30 +++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/clang/unittests/Analysis/FlowSensitive/TransferTest.cpp
b/clang/unittests/Analysis/FlowSensitive/TransferTest.cpp
index a8c282f140b4cd..86c7f32f0104be 100644
--- a/clang/unittests/Analysis/FlowSensitive/TransferTest.cpp
+++ b/clang/unittests/Analysis/FlowSensitive/TransferTest.cpp
@@ -2924,6 +2924,36 @@ TEST(TransferTest, ResultObjectLocation) {
});
}
+TEST(TransferTest, ResultObjectLocationForDefaultArgExpr) {
+ std::string Code = R"(
+ struct S {};
+ void funcWithDefaultArg(S s = S());
+ void target() {
+ funcWithDefaultArg();
+ // [[p]]
+ }
+ )";
+
+ using ast_matchers::cxxDefaultArgExpr;
+ using ast_matchers::match;
+ using ast_matchers::selectFirst;
+ runDataflow(
+ Code,
+ [](const llvm::StringMap<DataflowAnalysisState<NoopLattice>> &Results,
+ ASTContext &ASTCtx) {
+ const Environment &Env = getEnvironmentAtAnnotation(Results, "p");
+
+ auto *DefaultArg = selectFirst<CXXDefaultArgExpr>(
+ "default_arg",
+ match(cxxDefaultArgExpr().bind("default_arg"), ASTCtx));
+ ASSERT_NE(DefaultArg, nullptr);
+
+ // The values for default arguments aren't modeled; we merely verify
+ // that we can get a result object location for a default arg.
+ Env.getResultObjectLocation(*DefaultArg);
+ });
+}
+
TEST(TransferTest, ResultObjectLocationForDefaultInitExpr) {
std::string Code = R"(
struct S {};
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
