[clang] [Clang] Remove the special-casing for RequiresExprBodyDecl in BuildResolvedCallExpr() after fd87d765c0 (PR #111277)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Younan Zhang (zyn0217)

<details>
<summary>Changes</summary>

The special-casing for RequiresExprBodyDecl caused a regression, as reported in #<!-- -->110785.

This also merged the test for #<!-- -->84020 together with that of #<!-- -->110785 into clang/test/SemaTemplate/instantiate-requires-expr.cpp.

No release note because I think this merits a backport.

Fixes #<!-- -->110785

---
Full diff: https://github.com/llvm/llvm-project/pull/111277.diff


4 Files Affected:

- (modified) clang/lib/Sema/SemaExpr.cpp (+1-2) 
- (modified) clang/lib/Sema/TreeTransform.h (+1-1) 
- (removed) clang/test/SemaCXX/PR84020.cpp (-23) 
- (modified) clang/test/SemaTemplate/instantiate-requires-expr.cpp (+31) 


``````````diff
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index ae7bcedfb28c73..959f0739f03fb9 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -6963,8 +6963,7 @@ ExprResult Sema::BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl,
   }
 
   if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl))
-    if (!isa<RequiresExprBodyDecl>(CurContext) &&
-        Method->isImplicitObjectMemberFunction())
+    if (Method->isImplicitObjectMemberFunction())
       return ExprError(Diag(LParenLoc, diag::err_member_call_without_object)
                        << Fn->getSourceRange() << 0);
 
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 76efc9fe831854..ed9412c93c62b3 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -13907,7 +13907,7 @@ bool TreeTransform<Derived>::TransformOverloadExprDecls(OverloadExpr *Old,
     }
 
     AllEmptyPacks &= Decls.empty();
-  };
+  }
 
   // C++ [temp.res]/8.4.2:
   //   The program is ill-formed, no diagnostic required, if [...] lookup for
diff --git a/clang/test/SemaCXX/PR84020.cpp b/clang/test/SemaCXX/PR84020.cpp
deleted file mode 100644
index 8ea5dcc4527ae7..00000000000000
--- a/clang/test/SemaCXX/PR84020.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-// RUN: %clang_cc1 -std=c++20 -verify %s
-// RUN: %clang_cc1 -std=c++23 -verify %s
-// expected-no-diagnostics
-
-struct B {
-    template <typename S>
-    void foo();
-
-    void bar();
-};
-
-template <typename T, typename S>
-struct A : T {
-    auto foo() {
-        static_assert(requires { T::template foo<S>(); });
-        static_assert(requires { T::bar(); });
-    }
-};
-
-int main() {
-    A<B, double> a;
-    a.foo();
-}
diff --git a/clang/test/SemaTemplate/instantiate-requires-expr.cpp b/clang/test/SemaTemplate/instantiate-requires-expr.cpp
index 20a19d731ae169..a1f5456156a06f 100644
--- a/clang/test/SemaTemplate/instantiate-requires-expr.cpp
+++ b/clang/test/SemaTemplate/instantiate-requires-expr.cpp
@@ -237,3 +237,34 @@ constexpr bool e_v = true;
 static_assert(e_v<bool>);
 
 } // namespace GH73885
+
+namespace GH84020 {
+
+struct B {
+  template <typename S> void foo();
+  void bar();
+};
+
+template <typename T, typename S> struct A : T {
+  void foo() {
+    static_assert(requires { T::template foo<S>(); });
+    static_assert(requires { T::bar(); });
+  }
+};
+
+template class A<B, double>;
+
+} // namespace GH84020
+
+namespace GH110785 {
+
+struct Foo {
+  static void f(auto) requires(false) {}
+  void f(int) {}
+
+  static_assert([](auto v) {
+    return requires { f(v); };
+  } (0) == false);
+};
+
+} // namespace GH110785

``````````

</details>


https://github.com/llvm/llvm-project/pull/111277