port-sparc64/59370: compat 1.3 setjmp is busted

[campbell+netbsd%mumble.net@localhost]

>Number:         59370
>Category:       port-sparc64
>Synopsis:       compat 1.3 setjmp is busted
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 28 02:45:00 +0000 2025
>Originator:     Taylor R Campbell
>Release:        current
>Organization:
The Jumper Cable is Sparcing, Inc.
>Environment:
>Description:
Test case: lib/libc/setjmp/t_setjmp/compat13_longjmp_zero

Duration: 0.147627 seconds
Termination reason

FAILED: /tmp/build/2025.04.25.07.57.42-sparc64/src/tests/lib/libc/setjmp/t_setjmp.c:234: setjmp returned wrong value
Test case: lib/libc/setjmp/t_setjmp/compat13_setjmp

Duration: 0.149045 seconds
Termination reason

FAILED: /tmp/build/2025.04.25.07.57.42-sparc64/src/tests/lib/libc/setjmp/t_setjmp.c:237: setjmp returned wrong value
Test case: lib/libc/setjmp/t_setjmp/compat13_sigsetjmp_save

Duration: 0.144404 seconds
Termination reason

FAILED: /tmp/build/2025.04.25.07.57.42-sparc64/src/tests/lib/libc/setjmp/t_setjmp.c:237: setjmp returned wrong value
Test case: lib/libc/setjmp/t_sigstack/compat13_setjmp

Duration: 0.150036 seconds
Termination reason

FAILED: /tmp/build/2025.04.25.07.57.42-sparc64/src/tests/lib/libc/setjmp/t_sigstack.c:106: 3 recursive signal handler entries is too many in this test
Test case: lib/libc/setjmp/t_sigstack/compat13_sigsetjmp

Duration: 0.149530 seconds
Termination reason

FAILED: /tmp/build/2025.04.25.07.57.42-sparc64/src/tests/lib/libc/setjmp/t_sigstack.c:106: 3 recursive signal handler entries is too many in this test

https://releng.netbsd.org/b5reports/sparc64/2025/2025.04.25.07.57.42/test.html#lib_libc_setjmp_t_setjmp_compat13_longjmp_zero

Same results on real sparc64 hardware:

https://www.netbsd.org/~martin/sparc64-atf/966_atf.html#lib_libc_setjmp_t_setjmp_compat13_longjmp_zero
>How-To-Repeat:
cd /usr/tests/lib/libc/setjmp
atf-run | atf-report
>Fix:
Yes, please!