https://gcc.gnu.org/g:9c3777e9619ad3e776870843d248b7fc4d8c80ed
commit r14-12048-g9c3777e9619ad3e776870843d248b7fc4d8c80ed Author: Patrick Palka <[email protected]> Date: Tue Sep 16 21:00:50 2025 -0400 libstdc++: Explicitly pass -Wsystem-headers in tests that need it When running libstdc++ tests using an installed gcc (as opposed to an in-tree gcc), we naturally use system stdlib headers instead of the in-tree headers. But warnings from within system headers are suppressed by default, so tests that check for such warnings spuriously fail in such a setup. This patch makes us compile such tests with -Wsystem-headers so that they consistently pass. libstdc++-v3/ChangeLog: * testsuite/20_util/bind/dangling_ref.cc: Compile with -Wsystem-headers. * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise. * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc: Likewise. * testsuite/30_threads/packaged_task/cons/dangling_ref.cc: Likewise. Reviewed-by: Jonathan Wakely <[email protected]> (cherry picked from commit e690b97761e18daccb4fff0151c97c1d0115b55f) Diff: --- libstdc++-v3/testsuite/20_util/bind/dangling_ref.cc | 1 + libstdc++-v3/testsuite/20_util/ratio/operations/ops_overflow_neg.cc | 2 +- .../testsuite/29_atomics/atomic/operators/pointer_partial_void.cc | 1 + libstdc++-v3/testsuite/30_threads/packaged_task/cons/dangling_ref.cc | 1 + 4 files changed, 4 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/testsuite/20_util/bind/dangling_ref.cc b/libstdc++-v3/testsuite/20_util/bind/dangling_ref.cc index 70393e4392f8..eefaccd4badb 100644 --- a/libstdc++-v3/testsuite/20_util/bind/dangling_ref.cc +++ b/libstdc++-v3/testsuite/20_util/bind/dangling_ref.cc @@ -1,4 +1,5 @@ // { dg-do compile { target c++11 } } +// { dg-additional-options "-Wsystem-headers" } #include <functional> int f(); diff --git a/libstdc++-v3/testsuite/20_util/ratio/operations/ops_overflow_neg.cc b/libstdc++-v3/testsuite/20_util/ratio/operations/ops_overflow_neg.cc index 33c1f59bb77b..ced900bd4727 100644 --- a/libstdc++-v3/testsuite/20_util/ratio/operations/ops_overflow_neg.cc +++ b/libstdc++-v3/testsuite/20_util/ratio/operations/ops_overflow_neg.cc @@ -1,6 +1,6 @@ // { dg-do compile { target c++11 } } // { dg-require-cstdint "" } - +// { dg-additional-options "-Wsystem-headers" } // 2008-07-03 Chris Fairles <[email protected]> // Copyright (C) 2008-2024 Free Software Foundation, Inc. diff --git a/libstdc++-v3/testsuite/29_atomics/atomic/operators/pointer_partial_void.cc b/libstdc++-v3/testsuite/29_atomics/atomic/operators/pointer_partial_void.cc index cef43ec26f31..255912e85c4c 100644 --- a/libstdc++-v3/testsuite/29_atomics/atomic/operators/pointer_partial_void.cc +++ b/libstdc++-v3/testsuite/29_atomics/atomic/operators/pointer_partial_void.cc @@ -1,6 +1,7 @@ // { dg-do run { target { c++11_only || c++14_only } } } // { dg-require-atomic-builtins "" } // { dg-require-effective-target hosted } +// { dg-additional-options "-Wsystem-headers" } // Copyright (C) 2012-2024 Free Software Foundation, Inc. // diff --git a/libstdc++-v3/testsuite/30_threads/packaged_task/cons/dangling_ref.cc b/libstdc++-v3/testsuite/30_threads/packaged_task/cons/dangling_ref.cc index 9b3434a0bf6f..efe72eb99f52 100644 --- a/libstdc++-v3/testsuite/30_threads/packaged_task/cons/dangling_ref.cc +++ b/libstdc++-v3/testsuite/30_threads/packaged_task/cons/dangling_ref.cc @@ -1,4 +1,5 @@ // { dg-do compile { target c++11 } } +// { dg-additional-options "-Wsystem-headers" } #include <future> // C++20 [futures.task.members]
