On Thu, 6 Aug 2026, 13:23 Tomasz Kamiński, <[email protected]> wrote:
> Add _GLIBCXX23_DEPRECATED attribute to no_message_available,
> no_stream_resources, not_a_stream, stream_timeout, per LWG3869,
> "Deprecate std::errc constants related to UNIX STREAMS".
>
> The config/os/mingw32/error_constants.h does not define any
> of above enumerators (they definitions are commented out).
>
> libstdc++-v3/ChangeLog:
>
> * config/os/djgpp/error_constants.h (errc::no_message_available)
> (errc::no_stream_resources, errc:not_a_stream)
> (errc::stream_timeout): Mark as _GLIBCXX23_DEPRECATED
> * config/os/generic/error_constants.h
> (errc::no_message_available, errc::no_stream_resources)
> (errc:not_a_stream, errc::stream_timeout): Likewise.
> * config/os/mingw32-w64/error_constants.h
> (errc::no_message_available, errc::no_stream_resources)
> (errc:not_a_stream, errc::stream_timeout): Likewise.
> * testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc:
> Add dg-warning attributes for expected deprecation warnings.
> ---
> Tested on x86_64-linux locally. system_error/errc_std_c++0x.cc tested
> in all standard modes. OK for trunk?
>
OK
> libstdc++-v3/config/os/djgpp/error_constants.h | 8 ++++----
> libstdc++-v3/config/os/generic/error_constants.h | 8 ++++----
> libstdc++-v3/config/os/mingw32-w64/error_constants.h | 8 ++++----
> .../19_diagnostics/headers/system_error/errc_std_c++0x.cc | 8 ++++----
> 4 files changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/libstdc++-v3/config/os/djgpp/error_constants.h
> b/libstdc++-v3/config/os/djgpp/error_constants.h
> index 25d702a9b68..217b9fb007d 100644
> --- a/libstdc++-v3/config/os/djgpp/error_constants.h
> +++ b/libstdc++-v3/config/os/djgpp/error_constants.h
> @@ -93,7 +93,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> no_lock_available = ENOLCK,
>
> #ifdef ENODATA
> - no_message_available = ENODATA,
> + no_message_available _GLIBCXX23_DEPRECATED = ENODATA,
> #endif
>
> // no_message = ENOMSG,
> @@ -101,7 +101,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> no_space_on_device = ENOSPC,
>
> #ifdef ENOSR
> - no_stream_resources = ENOSR,
> + no_stream_resources _GLIBCXX23_DEPRECATED = ENOSR,
> #endif
>
> no_such_device_or_address = ENXIO,
> @@ -112,7 +112,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> // not_a_socket = ENOTSOCK,
>
> #ifdef ENOSTR
> - not_a_stream = ENOSTR,
> + not_a_stream _GLIBCXX23_DEPRECATED = ENOSTR,
> #endif
>
> // not_connected = ENOTCONN,
> @@ -152,7 +152,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> #endif
>
> #ifdef ETIME
> - stream_timeout = ETIME,
> + stream_timeout _GLIBCXX26_DEPRECATED = ETIME,
> #endif
>
> #ifdef ETXTBSY
> diff --git a/libstdc++-v3/config/os/generic/error_constants.h
> b/libstdc++-v3/config/os/generic/error_constants.h
> index d574455ed3b..c1c8aed251b 100644
> --- a/libstdc++-v3/config/os/generic/error_constants.h
> +++ b/libstdc++-v3/config/os/generic/error_constants.h
> @@ -93,7 +93,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> no_lock_available = ENOLCK,
>
> #ifdef ENODATA
> - no_message_available = ENODATA,
> + no_message_available _GLIBCXX23_DEPRECATED = ENODATA,
> #endif
>
> no_message = ENOMSG,
> @@ -101,7 +101,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> no_space_on_device = ENOSPC,
>
> #ifdef ENOSR
> - no_stream_resources = ENOSR,
> + no_stream_resources _GLIBCXX23_DEPRECATED = ENOSR,
> #endif
>
> no_such_device_or_address = ENXIO,
> @@ -112,7 +112,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> not_a_socket = ENOTSOCK,
>
> #ifdef ENOSTR
> - not_a_stream = ENOSTR,
> + not_a_stream _GLIBCXX23_DEPRECATED = ENOSTR,
> #endif
>
> not_connected = ENOTCONN,
> @@ -152,7 +152,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> #endif
>
> #ifdef ETIME
> - stream_timeout = ETIME,
> + stream_timeout _GLIBCXX23_DEPRECATED = ETIME,
> #endif
>
> #ifdef ETXTBSY
> diff --git a/libstdc++-v3/config/os/mingw32-w64/error_constants.h
> b/libstdc++-v3/config/os/mingw32-w64/error_constants.h
> index a6e68457fe8..f2a4fb57904 100644
> --- a/libstdc++-v3/config/os/mingw32-w64/error_constants.h
> +++ b/libstdc++-v3/config/os/mingw32-w64/error_constants.h
> @@ -90,7 +90,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> #endif
> no_lock_available = ENOLCK,
> #ifdef ENODATA
> - no_message_available = ENODATA,
> + no_message_available _GLIBCXX23_DEPRECATED = ENODATA,
> #endif
> #ifdef ENOMSG
> no_message = ENOMSG,
> @@ -100,7 +100,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> no_space_on_device = ENOSPC,
> #endif
> #ifdef ENOSR
> - no_stream_resources = ENOSR,
> + no_stream_resources _GLIBCXX23_DEPRECATED = ENOSR,
> #endif
> no_such_device_or_address = ENXIO,
> no_such_device = ENODEV,
> @@ -109,7 +109,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> not_a_directory = ENOTDIR,
> not_a_socket = ENOTSOCK,
> #ifdef ENOSTR
> - not_a_stream = ENOSTR,
> + not_a_stream _GLIBCXX23_DEPRECATED = ENOSTR,
> #endif
> not_connected = ENOTCONN,
> not_enough_memory = ENOMEM,
> @@ -139,7 +139,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> state_not_recoverable = ENOTRECOVERABLE,
> #endif
> #ifdef ETIME
> - stream_timeout = ETIME,
> + stream_timeout _GLIBCXX23_DEPRECATED = ETIME,
> #endif
> #ifdef ETXTBSY
> text_file_busy = ETXTBSY,
> diff --git
> a/libstdc++-v3/testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc
> b/libstdc++-v3/testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc
> index b5b085e28b2..1b1a950c2b0 100644
> ---
> a/libstdc++-v3/testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc
> +++
> b/libstdc++-v3/testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc
> @@ -82,7 +82,7 @@ void test01()
> TEST_ERRC(no_lock_available);
>
> #ifdef ENODATA
> - TEST_ERRC(no_message_available);
> + TEST_ERRC(no_message_available); // { dg-warning "deprecated" "" {
> target c++23 } }
> #endif
>
> #ifdef ENOMSG
> @@ -95,7 +95,7 @@ void test01()
> #endif
>
> #ifdef ENOSR
> - TEST_ERRC(no_stream_resources);
> + TEST_ERRC(no_stream_resources); // { dg-warning "deprecated" "" {
> target c++23 } }
> #endif
>
> TEST_ERRC(no_such_device_or_address);
> @@ -106,7 +106,7 @@ void test01()
> TEST_ERRC(not_a_socket);
>
> #ifdef ENOSTR
> - TEST_ERRC(not_a_stream);
> + TEST_ERRC(not_a_stream); // { dg-warning "deprecated" "" { target c++23
> } }
> #endif
>
> TEST_ERRC(not_connected);
> @@ -153,7 +153,7 @@ void test01()
> #endif
>
> #ifdef ETIME
> - TEST_ERRC(stream_timeout);
> + TEST_ERRC(stream_timeout); // { dg-warning "deprecated" "" { target
> c++23 } }
> #endif
>
> #ifdef ETXTBSY
> --
> 2.55.0
>
>
