minimal-bootstrap.musl11: add stdio_flush_on_exit.patch, drop always-flush.patch

      url = "${liveBootstrap}/patches/sigsetjmp.patch";

      hash = "sha256-wd2Aev1zPJXy3q933aiup5p1IMKzVJBquAyl3gbK4PU=";

    })

    # HACK: always flush stdio immediately

    # Do not remove atm, gcc 4.6 does not build without this patch applied.

    ./always-flush.patch

    # liveBootstrap/sysa/musl-1.1.24/patches/stdio_flush_on_exit.patch with forward declarations added

    # to avoid `error: implicit declaration of function '__stdio_exit'`

    # Required to fix buffered stdout being truncated on exit

    ./stdio_flush_on_exit.patch

    (fetchurl {

      url = "${liveBootstrap}/patches/va_list.patch";

      hash = "sha256-UmcMIl+YCi3wIeVvjbsCyqFlkyYsM4ECNwTfXP+s7vg=";

diff --git src/env/__libc_start_main.c src/env/__libc_start_main.c

index 8fbe526..9476c22 100644

--- src/env/__libc_start_main.c

+++ src/env/__libc_start_main.c

@@ -91,6 +91,7 @@ static int libc_start_main_stage2(int (*main)(int,char **,char **), int argc, ch

 	__libc_start_init();

 	/* Pass control to the application */

+	setbuf(stdout, NULL);

 	exit(main(argc, argv, envp));

 	return 0;

 }

Initial patch version retrieved from

https://git.stikonas.eu/andrius/live-bootstrap/src/commit/cd361e63f77842d9780303d63382eb686843c76b/sysa/musl-1.1.24/patches/stdio_flush_on_exit.patch

SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>

SPDX-FileCopyrightText: 2025 Luna Nova <git@lunnova.dev>

SPDX-License-Identifier: MIT

Make sure real __stdio_exit() is called on exit and not the dummy

noop versions.  This fixes the issue of truncated output when redirecting

output to a file or pipe.  It also fixes truncated output on programs

that forget to call fclose()

Adds forward declarations to avoid implicit declaration error.

diff --git a/src/exit/exit.c b/src/exit/exit.c

index a6869b37..a4164682 100644

--- src/exit/exit.c

+++ src/exit/exit.c

@@ -2,16 +2,10 @@

 #include <stdint.h>

 #include "libc.h"

-static void dummy()

-{

-}

-

-/* atexit.c and __stdio_exit.c override these. the latter is linked

- * as a consequence of linking either __toread.c or __towrite.c. */

-weak_alias(dummy, __funcs_on_exit);

-weak_alias(dummy, __stdio_exit);

-weak_alias(dummy, _fini);

+void __funcs_on_exit(void);

+void __stdio_exit(void);

+void _fini(void);

 extern weak hidden void (*const __fini_array_start)(void), (*const __fini_array_end)(void);

 static void libc_exit_fini(void)

diff --git a/src/internal/stdio_impl.h b/src/internal/stdio_impl.h

index d7398f59..69141813 100644

--- src/internal/stdio_impl.h

+++ src/internal/stdio_impl.h

@@ -47,9 +47,9 @@ struct _IO_FILE {

 	struct __locale_struct *locale;

 };

-extern hidden FILE *volatile __stdin_used;

-extern hidden FILE *volatile __stdout_used;

-extern hidden FILE *volatile __stderr_used;

+extern FILE *volatile __stdin_used;

+extern FILE *volatile __stdout_used;

+extern FILE *volatile __stderr_used;

 hidden int __lockfile(FILE *);

 hidden void __unlockfile(FILE *);

diff --git a/src/stdio/__stdio_exit.c b/src/stdio/__stdio_exit.c

index a5e42c67..5947a141 100644

--- src/stdio/__stdio_exit.c

+++ src/stdio/__stdio_exit.c

@@ -1,10 +1,5 @@

 #include "stdio_impl.h"

-static FILE *volatile dummy_file = 0;

-weak_alias(dummy_file, __stdin_used);

-weak_alias(dummy_file, __stdout_used);

-weak_alias(dummy_file, __stderr_used);

-

 static void close_file(FILE *f)

 {

 	if (!f) return;