[clang] Add Clang attribute to ensure that fields are initialized explicitly (PR #102040)
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cfe-commits at lists.llvm.org
Wed Sep 4 08:02:33 PDT 2024
================
@@ -1472,3 +1472,25 @@ template<typename T> struct Outer {
};
};
Outer<int>::Inner outerinner;
+
+void aggregate() {
+ struct B {
+ [[clang::explicit_init]] int f1;
+ };
+
+ struct S : B { // expected-warning {{uninitialized}}
+ int f2;
+ int f3 [[clang::explicit_init]];
+ };
+
+#if __cplusplus >= 202002L
+ S a({}, 0); // expected-warning {{'f1' is left uninitialized}} expected-warning {{'f3' is left uninitialized}}
+#endif
+ S b{.f3 = 1}; // expected-warning {{'f1' is left uninitialized}}
+ S c{.f2 = 5}; // expected-warning {{'f1' is left uninitialized}} expected-warning {{'f3' is left uninitialized}} expected-warning {{'f3' is left uninitialized}}
+ c = {{}, 0}; // expected-warning {{'f1' is left uninitialized}} expected-warning {{'f3' is left uninitialized}}
+ S d; // expected-warning {{uninitialized}} expected-note {{constructor}}
----------------
higher-performance wrote:
Yup, that all SGTM.
https://github.com/llvm/llvm-project/pull/102040
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