https://gcc.gnu.org/g:b7b67732e20217196f2a13a10fc3df4605b2b2ab
commit r15-3628-gb7b67732e20217196f2a13a10fc3df4605b2b2ab
Author: Jakub Jelinek <ja...@redhat.com>
Date: Fri Sep 13 16:13:01 2024 +0200
c++: Don't emit deprecated/unavailable attribute diagnostics when creating
cdtor thunks [PR116678]
Another spot where we mark_used a function (in this case ctor or dtor)
even when it is just artificially used inside of thunks (emitted on mingw
with -Os for the testcase).
2024-09-13 Jakub Jelinek <ja...@redhat.com>
PR c++/116678
* optimize.cc: Include decl.h.
(maybe_thunk_body): Temporarily change deprecated_state to
UNAVAILABLE_DEPRECATED_SUPPRESS.
* g++.dg/warn/deprecated-20.C: New test.
Diff:
---
gcc/cp/optimize.cc | 6 ++++++
gcc/testsuite/g++.dg/warn/deprecated-20.C | 16 ++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/gcc/cp/optimize.cc b/gcc/cp/optimize.cc
index b8791d8a9635..8429d856728f 100644
--- a/gcc/cp/optimize.cc
+++ b/gcc/cp/optimize.cc
@@ -23,6 +23,7 @@ along with GCC; see the file COPYING3. If not see
#include "coretypes.h"
#include "target.h"
#include "cp-tree.h"
+#include "decl.h"
#include "stringpool.h"
#include "cgraph.h"
#include "debug.h"
@@ -287,6 +288,11 @@ maybe_thunk_body (tree fn, bool force)
if (ctor_omit_inherited_parms (fns[0]))
return 0;
+ /* Don't diagnose deprecated or unavailable cdtors just because they
+ have thunks emitted for them. */
+ auto du = make_temp_override (deprecated_state,
+ UNAVAILABLE_DEPRECATED_SUPPRESS);
+
DECL_ABSTRACT_P (fn) = false;
if (!DECL_WEAK (fn))
{
diff --git a/gcc/testsuite/g++.dg/warn/deprecated-20.C
b/gcc/testsuite/g++.dg/warn/deprecated-20.C
new file mode 100644
index 000000000000..1911aeff4e37
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/deprecated-20.C
@@ -0,0 +1,16 @@
+// PR c++/116678
+// { dg-do compile }
+// { dg-options "-Os -pedantic" }
+
+struct S
+{
+ [[deprecated]] S () { s = 1; } // { dg-bogus "'S::S\\\(\\\)' is
deprecated" }
+ S (int x) { s = x; } // { dg-warning "C\\\+\\\+11 attributes
only available with" "" { target c++98_only } .-1 }
+ ~S () {}
+ int s;
+};
+
+int
+main ()
+{
+}
