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016829559e
g_type_ensure has a large comment saying _get_type shouldn't be marked with G_GNUC_CONST because it has side-effects on the first run, but it's OK if you consistently call g_type_ensure first. Unfortunately, this isn't accurate. GCC trunk (observed at r17-1725-ge259a182e1f100) now analyses points-to information more effectively and propagates its findings, so it sees the function modifies some global state, concludes that can't be possible (because of the const attribute), and deletes the stores. pure unfortunately is unsuitable for *_get_type too as it has a side-effect (writes to global memory). Mesa had a similar issue which I fixed recently [0]. glib and glibmm likely want the (not-yet-implemented) 'idempotent' attribute instead [1]. In fact, this exact problem is what motivated that request! :) ebassi mentions an alternative to the current setup as well, using atomics [2]. This problem has gone back many years but the compiler has finally fully outsmarted us here, so give in. [0] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/42361 [1] https://gcc.gnu.org/PR32911 [2] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4249#note_2583110 Fixes: https://gitlab.gnome.org/GNOME/glib/-/work_items/3984 Signed-off-by: Sam James <sam@gentoo.org>
136 lines
6.7 KiB
C
136 lines
6.7 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright © 2010 Codethink Limited
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Ryan Lortie <desrt@desrt.ca>
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*/
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#ifndef __G_APPLICATION_COMMAND_LINE_H__
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#define __G_APPLICATION_COMMAND_LINE_H__
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#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
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#error "Only <gio/gio.h> can be included directly."
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#endif
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#include <gio/giotypes.h>
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G_BEGIN_DECLS
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#define G_TYPE_APPLICATION_COMMAND_LINE (g_application_command_line_get_type ())
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#define G_APPLICATION_COMMAND_LINE(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
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G_TYPE_APPLICATION_COMMAND_LINE, \
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GApplicationCommandLine))
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#define G_APPLICATION_COMMAND_LINE_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
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G_TYPE_APPLICATION_COMMAND_LINE, \
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GApplicationCommandLineClass))
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#define G_IS_APPLICATION_COMMAND_LINE(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
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G_TYPE_APPLICATION_COMMAND_LINE))
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#define G_IS_APPLICATION_COMMAND_LINE_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), \
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G_TYPE_APPLICATION_COMMAND_LINE))
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#define G_APPLICATION_COMMAND_LINE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
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G_TYPE_APPLICATION_COMMAND_LINE, \
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GApplicationCommandLineClass))
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typedef struct _GApplicationCommandLinePrivate GApplicationCommandLinePrivate;
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typedef struct _GApplicationCommandLineClass GApplicationCommandLineClass;
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struct _GApplicationCommandLine
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{
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/*< private >*/
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GObject parent_instance;
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GApplicationCommandLinePrivate *priv;
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};
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struct _GApplicationCommandLineClass
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{
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/*< private >*/
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GObjectClass parent_class;
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void (* print_literal) (GApplicationCommandLine *cmdline,
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const gchar *message);
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void (* printerr_literal) (GApplicationCommandLine *cmdline,
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const gchar *message);
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GInputStream * (* get_stdin) (GApplicationCommandLine *cmdline);
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void (* done) (GApplicationCommandLine *cmdline);
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gpointer padding[10];
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};
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GIO_AVAILABLE_IN_ALL
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GType g_application_command_line_get_type (void);
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GIO_AVAILABLE_IN_ALL
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gchar ** g_application_command_line_get_arguments (GApplicationCommandLine *cmdline,
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int *argc);
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GIO_AVAILABLE_IN_2_40
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GVariantDict * g_application_command_line_get_options_dict (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_2_36
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GInputStream * g_application_command_line_get_stdin (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_ALL
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const gchar * const * g_application_command_line_get_environ (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_ALL
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const gchar * g_application_command_line_getenv (GApplicationCommandLine *cmdline,
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const gchar *name);
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GIO_AVAILABLE_IN_ALL
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const gchar * g_application_command_line_get_cwd (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_ALL
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gboolean g_application_command_line_get_is_remote (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_2_80
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void g_application_command_line_print_literal (GApplicationCommandLine *cmdline,
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const gchar *message);
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GIO_AVAILABLE_IN_2_80
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void g_application_command_line_printerr_literal (GApplicationCommandLine *cmdline,
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const gchar *message);
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GIO_AVAILABLE_IN_ALL
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void g_application_command_line_print (GApplicationCommandLine *cmdline,
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const gchar *format,
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...) G_GNUC_PRINTF(2, 3);
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GIO_AVAILABLE_IN_ALL
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void g_application_command_line_printerr (GApplicationCommandLine *cmdline,
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const gchar *format,
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...) G_GNUC_PRINTF(2, 3);
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GIO_AVAILABLE_IN_ALL
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int g_application_command_line_get_exit_status (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_ALL
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void g_application_command_line_set_exit_status (GApplicationCommandLine *cmdline,
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int exit_status);
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GIO_AVAILABLE_IN_ALL
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GVariant * g_application_command_line_get_platform_data (GApplicationCommandLine *cmdline);
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GIO_AVAILABLE_IN_2_36
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GFile * g_application_command_line_create_file_for_arg (GApplicationCommandLine *cmdline,
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const gchar *arg);
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GIO_AVAILABLE_IN_2_80
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void g_application_command_line_done (GApplicationCommandLine *cmdline);
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G_END_DECLS
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#endif /* __G_APPLICATION_COMMAND_LINE_H__ */
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