alsa-project/alsa-tools issue #12 was opened from thesamesam:

Clang 16 will make -Wincompatible-function-pointer-types an error by default.

You can emulate this error using: * GCC via -Werror=incompatible-pointer-types (GCC lacks a more specific warning for just func. ptrs) * Clang <16 via -Werror=incompatible-function-pointer-types

Originally reported downstream in Gentoo at https://bugs.gentoo.org/880997.

``` echomixer.c:2108:7: error: incompatible function pointer types passing 'void (GtkWidget *, gpointer)' (aka 'void (struct _GtkWidget *, void *)') to parameter of type 'GCallback' (aka 'void (*)(void)') [-Werror,-Wincompatible-function-pointer-types] ...gtk_signal_connect(GTK_OBJECT(menuitem), "activate", Digital_mode_activate, (gpointer)(long)i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/gtk-2.0/gtk/gtksignal.h:51:47: note: expanded from macro 'gtk_signal_connect' gtk_signal_connect_full ((object), (name), (func), NULL, (func_data)... ^~~~~~ /usr/include/gtk-2.0/gtk/gtksignal.h:123:23: note: passing argument to parameter 'func' here GCallback func, ^ [...] ```

Full build log: https://bugs.gentoo.org/attachment.cgi?id=831477

Issue URL : https://github.com/alsa-project/alsa-tools/issues/12 Repository URL: https://github.com/alsa-project/alsa-tools