https://github.com/alejandro-alvarez-sonarsource updated
https://github.com/llvm/llvm-project/pull/119711
From d398fa13c2fa141954c79ca68a59c6ac506b393f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alejandro=20=C3=81lvarez=20Ayll=C3=B3n?=
<alejandro.alva...@sonarsource.com>
Date: Wed, 11 Dec 2024 15:43:58 +0100
Subject: [PATCH 1/3] Add regression test
---
clang/test/Sema/gh106576.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
create mode 100644 clang/test/Sema/gh106576.c
diff --git a/clang/test/Sema/gh106576.c b/clang/test/Sema/gh106576.c
new file mode 100644
index 00000000000000..792977dea14132
--- /dev/null
+++ b/clang/test/Sema/gh106576.c
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+typedef _Atomic char atomic_char;
+
+typedef _Atomic char atomic_char;
+
+atomic_char counter;
+
+char load_plus_one(void) {
+ return ({counter;}) + 1; // no crash
+}
+
+char type_of_stmt_expr(void) {
+ typeof(({counter;})) y = ""; // expected-error-re {{incompatible pointer to
integer conversion initializing 'typeof (({{{.*}}}))' (aka 'char') with an
expression of type 'char[1]'}}
+ return y;
+}
From 296aa35fe32449067c69d2b40031af0dd6822a07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alejandro=20=C3=81lvarez=20Ayll=C3=B3n?=
<alejandro.alva...@sonarsource.com>
Date: Thu, 12 Dec 2024 15:08:56 +0100
Subject: [PATCH 2/3] Tentative fix
---
clang/lib/Sema/SemaExpr.cpp | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 20bf6f7f6f28ff..165447efb345c5 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -15861,10 +15861,19 @@ ExprResult Sema::ActOnStmtExprResult(ExprResult ER) {
if (Cast && Cast->getCastKind() == CK_ARCConsumeObject)
return Cast->getSubExpr();
+ auto Ty = E->getType().getUnqualifiedType();
+
+ // If the type is an atomic, the statement type is the underlying type.
+ if (const AtomicType *AT = Ty->getAs<AtomicType>()) {
+ Ty = AT->getValueType().getUnqualifiedType();
+ return ImplicitCastExpr::Create(Context, Ty, CK_AtomicToNonAtomic, E,
+ /*base path*/ nullptr, VK_PRValue,
+ FPOptionsOverride());
+ }
+
// FIXME: Provide a better location for the initialization.
return PerformCopyInitialization(
- InitializedEntity::InitializeStmtExprResult(
- E->getBeginLoc(), E->getType().getUnqualifiedType()),
+ InitializedEntity::InitializeStmtExprResult(E->getBeginLoc(), Ty),
SourceLocation(), E);
}
From d13e1090c641314aae8eef50f1b0fb5c0ec67e39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alejandro=20=C3=81lvarez=20Ayll=C3=B3n?=
<alejandro.alva...@sonarsource.com>
Date: Thu, 12 Dec 2024 15:30:07 +0100
Subject: [PATCH 3/3] Use PerformImplicitConversion
---
clang/lib/Sema/SemaExpr.cpp | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 165447efb345c5..45ae97807c2032 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -15866,9 +15866,7 @@ ExprResult Sema::ActOnStmtExprResult(ExprResult ER) {
// If the type is an atomic, the statement type is the underlying type.
if (const AtomicType *AT = Ty->getAs<AtomicType>()) {
Ty = AT->getValueType().getUnqualifiedType();
- return ImplicitCastExpr::Create(Context, Ty, CK_AtomicToNonAtomic, E,
- /*base path*/ nullptr, VK_PRValue,
- FPOptionsOverride());
+ return PerformImplicitConversion(E, Ty, AssignmentAction::Casting);
}
// FIXME: Provide a better location for the initialization.
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