xbolva00 created this revision.
xbolva00 added a reviewer: rsmith.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
Solves https://bugs.llvm.org/show_bug.cgi?id=45634
Be more agressive than GCC with -Wdeprecated-copy. Also provide
-W(no-)deprecated-copy-user-provided options to on/off this behaviour.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D79714
Files:
clang/include/clang/Basic/DiagnosticGroups.td
clang/include/clang/Basic/DiagnosticSemaKinds.td
clang/lib/Sema/SemaDeclCXX.cpp
clang/test/SemaCXX/deprecated-copy.cpp
clang/test/SemaCXX/deprecated.cpp
Index: clang/test/SemaCXX/deprecated.cpp
===================================================================
--- clang/test/SemaCXX/deprecated.cpp
+++ clang/test/SemaCXX/deprecated.cpp
@@ -103,10 +103,10 @@
void g() { c1 = c2; } // expected-note {{implicit copy assignment operator for 'DeprecatedCopy::Dtor' first required here}}
struct DefaultedDtor {
- ~DefaultedDtor() = default;
- };
- DefaultedDtor d1, d2(d1);
- void h() { d1 = d2; }
+ ~DefaultedDtor() = default; // expected-warning {{definition of implicit copy constructor for 'DefaultedDtor' is deprecated because it has a user-declared destructor}}
+ }; // expected-warning@-1 {{definition of implicit copy assignment operator for 'DefaultedDtor' is deprecated because it has a user-declared destructor}}
+ DefaultedDtor d1, d2(d1); // expected-note {{in implicit copy constructor for 'DeprecatedCopy::DefaultedDtor' first required here}}
+ void h() { d1 = d2; } // expected-note {{in implicit copy assignment operator for 'DeprecatedCopy::DefaultedDtor' first required here}}
}
#endif
Index: clang/test/SemaCXX/deprecated-copy.cpp
===================================================================
--- clang/test/SemaCXX/deprecated-copy.cpp
+++ clang/test/SemaCXX/deprecated-copy.cpp
@@ -1,7 +1,12 @@
// RUN: %clang_cc1 -std=c++11 %s -Wdeprecated-copy -verify
+// RUN: %clang_cc1 -std=c++11 %s -Wno-deprecated-copy-user-provided -DNO_USER_PROVIDED -verify
// RUN: %clang_cc1 -std=c++11 %s -Wdeprecated-copy-dtor -DDEPRECATED_COPY_DTOR -verify
// RUN: %clang_cc1 -std=c++11 %s -Wextra -verify
+#ifdef NO_USER_PROVIDED
+// expected-no-diagnostics
+#endif
+
#ifdef DEPRECATED_COPY_DTOR
struct A {
int *ptr;
@@ -14,10 +19,30 @@
}
#else
struct B {
- B &operator=(const B &); // expected-warning {{definition of implicit copy constructor for 'B' is deprecated because it has a user-declared copy assignment operator}}
+ B &operator=(const B &);
+#ifndef NO_USER_PROVIDED
+// expected-warning@-2 {{definition of implicit copy constructor for 'B' is deprecated because it has a user-declared copy assignment operator}}
+#endif
};
void bar() {
- B b1, b2(b1); // expected-note {{implicit copy constructor for 'B' first required here}}
+ B b1, b2(b1);
+#ifndef NO_USER_PROVIDED
+// expected-note@-2 {{implicit copy constructor for 'B' first required here}}
+#endif
}
+
+struct S {
+ int i;
+ S &operator=(const S &) = delete;
+#ifndef NO_USER_PROVIDED
+// expected-warning@-2 {{definition of implicit copy constructor for 'S' is deprecated because it has a user-declared copy assignment operator}}
+#endif
+};
+
+S test(const S &s) { return S(s); }
+#ifndef NO_USER_PROVIDED
+// expected-note@-2 {{in implicit copy constructor for 'S' first required here}}
+#endif
+
#endif
Index: clang/lib/Sema/SemaDeclCXX.cpp
===================================================================
--- clang/lib/Sema/SemaDeclCXX.cpp
+++ clang/lib/Sema/SemaDeclCXX.cpp
@@ -13850,11 +13850,17 @@
assert(UserDeclaredOperation);
}
- if (UserDeclaredOperation && UserDeclaredOperation->isUserProvided()) {
- S.Diag(UserDeclaredOperation->getLocation(),
- isa<CXXDestructorDecl>(UserDeclaredOperation)
- ? diag::warn_deprecated_copy_dtor_operation
- : diag::warn_deprecated_copy_operation)
+ if (UserDeclaredOperation) {
+ unsigned DiagID;
+ if (UserDeclaredOperation->isUserProvided())
+ DiagID = isa<CXXDestructorDecl>(UserDeclaredOperation)
+ ? diag::warn_deprecated_copy_dtor_operation_user_provided
+ : diag::warn_deprecated_copy_operation_user_provided;
+ else
+ DiagID = isa<CXXDestructorDecl>(UserDeclaredOperation)
+ ? diag::warn_deprecated_copy_dtor_operation
+ : diag::warn_deprecated_copy_operation;
+ S.Diag(UserDeclaredOperation->getLocation(), DiagID)
<< RD << /*copy assignment*/ !isa<CXXConstructorDecl>(CopyOp);
}
}
Index: clang/include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -561,6 +561,12 @@
"definition of implicit copy %select{constructor|assignment operator}1 "
"for %0 is deprecated because it has a user-declared destructor">,
InGroup<DeprecatedCopyDtor>, DefaultIgnore;
+def warn_deprecated_copy_operation_user_provided : Warning<
+ warn_deprecated_copy_operation.Text>,
+ InGroup<DeprecatedCopyUserProvided>, DefaultIgnore;
+def warn_deprecated_copy_dtor_operation_user_provided : Warning<
+ warn_deprecated_copy_dtor_operation.Text>,
+ InGroup<DeprecatedCopyDtorUserProvided>, DefaultIgnore;
def warn_cxx17_compat_exception_spec_in_signature : Warning<
"mangled name of %0 will change in C++17 due to non-throwing exception "
"specification in function signature">, InGroup<CXX17CompatMangling>;
Index: clang/include/clang/Basic/DiagnosticGroups.td
===================================================================
--- clang/include/clang/Basic/DiagnosticGroups.td
+++ clang/include/clang/Basic/DiagnosticGroups.td
@@ -152,8 +152,10 @@
def DeprecatedArrayCompare : DiagGroup<"deprecated-array-compare">;
def DeprecatedAttributes : DiagGroup<"deprecated-attributes">;
def DeprecatedCommaSubscript : DiagGroup<"deprecated-comma-subscript">;
-def DeprecatedCopy : DiagGroup<"deprecated-copy">;
-def DeprecatedCopyDtor : DiagGroup<"deprecated-copy-dtor">;
+def DeprecatedCopyUserProvided : DiagGroup<"deprecated-copy-user-provided">;
+def DeprecatedCopyDtorUserProvided : DiagGroup<"deprecated-copy-dtor-user-provided">;
+def DeprecatedCopy : DiagGroup<"deprecated-copy", [DeprecatedCopyUserProvided]>;
+def DeprecatedCopyDtor : DiagGroup<"deprecated-copy-dtor", [DeprecatedCopyDtorUserProvided]>;
def DeprecatedDeclarations : DiagGroup<"deprecated-declarations">;
def UnavailableDeclarations : DiagGroup<"unavailable-declarations">;
def UnguardedAvailabilityNew : DiagGroup<"unguarded-availability-new">;
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