[clang] [Clang] [Sema] Fix some assertions not looking through type sugar (PR #92299)
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Wed May 15 10:52:07 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
Author: Mital Ashok (MitalAshok)
<details>
<summary>Changes</summary>
Fixes #<!-- -->92284
---
Full diff: https://github.com/llvm/llvm-project/pull/92299.diff
3 Files Affected:
- (modified) clang/lib/AST/ExprConstant.cpp (+1-1)
- (modified) clang/lib/Sema/SemaInit.cpp (+1-1)
- (modified) clang/test/SemaCXX/paren-list-agg-init.cpp (+16)
``````````diff
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index f1aa19e4409e1..dca2b5d016738 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -11420,7 +11420,7 @@ bool ArrayExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E,
bool ArrayExprEvaluator::VisitCXXParenListInitExpr(
const CXXParenListInitExpr *E) {
- assert(dyn_cast<ConstantArrayType>(E->getType()) &&
+ assert(E->getType()->isConstantArrayType() &&
"Expression result is not a constant array type");
return VisitCXXParenListOrInitListExpr(E, E->getInitExprs(),
diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index 708286e192f9c..77d0075fbfd88 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -5511,7 +5511,7 @@ static void TryOrBuildParenListInitialization(
<< SE->getSourceRange();
return;
} else {
- assert(isa<IncompleteArrayType>(Entity.getType()));
+ assert(Entity.getType()->isIncompleteArrayType());
ArrayLength = Args.size();
}
EntityIndexToProcess = ArrayLength;
diff --git a/clang/test/SemaCXX/paren-list-agg-init.cpp b/clang/test/SemaCXX/paren-list-agg-init.cpp
index c1964a5a9eb00..e8a9cd7e0509c 100644
--- a/clang/test/SemaCXX/paren-list-agg-init.cpp
+++ b/clang/test/SemaCXX/paren-list-agg-init.cpp
@@ -313,3 +313,19 @@ namespace GH63903 {
constexpr S s(0); // beforecxx20-warning {{aggregate initialization of type 'const S' from a parenthesized list of values is a C++20 extension}} \
// expected-error {{constexpr variable 's' must be initialized by a constant expression}}
}
+
+namespace GH92284 {
+ using T = int[1]; T x(42);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'T' (aka 'int[1]') from a parenthesized list of values is a C++20 extension}}
+ using Ta = int[2]; Ta a(42);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'Ta' (aka 'int[2]') from a parenthesized list of values is a C++20 extension}}
+ using Tb = int[2]; Tb b(42,43);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'Tb' (aka 'int[2]') from a parenthesized list of values is a C++20 extension}}
+ using Tc = int[]; Tc c(42);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'int[1]' from a parenthesized list of values is a C++20 extension}}
+ using Td = int[]; Td d(42,43);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'int[2]' from a parenthesized list of values is a C++20 extension}}
+ template<typename T, int Sz> using ThroughAlias = T[Sz];
+ ThroughAlias<int, 1> e(42);
+// beforecxx20-warning at -1 {{aggregate initialization of type 'ThroughAlias<int, 1>' (aka 'int[1]') from a parenthesized list of values is a C++20 extension}}
+}
``````````
</details>
https://github.com/llvm/llvm-project/pull/92299
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