CVS commit: [netbsd-11] src

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sat Nov 29 16:08:01 UTC 2025

Modified Files:
        src/lib/libpthread [netbsd-11]: Makefile shlib_version
        src/tests/lib/libpthread/dlopen [netbsd-11]: t_dlopen.c
            t_dso_pthread_create.c

Log Message:
Pull up following revision(s) (requested by riastradh in ticket #110):

        lib/libpthread/Makefile: revision 1.103
        tests/lib/libpthread/dlopen/t_dso_pthread_create.c: revision 1.2
        tests/lib/libpthread/dlopen/t_dlopen.c: revision 1.2
        tests/lib/libpthread/dlopen/t_dlopen.c: revision 1.3
        lib/libpthread/shlib_version: revision 1.24

tests/lib/libpthread: Test unloading libpthread after lazy binding.

If you dlopen libpthread and dlclose it again, the thread stubs like
pthread_mutex_lock need to continue working -- a library might have
calls to it in order to support thread-safety for threaded
applications, but that library needs to continue working even in
non-threaded applications after lazy binding of the libpthread symbol
instead of the libc stub.

PR lib/59784: dlopening and dlclosing libpthread is broken

tests/lib/libpthread: Don't abuse xfail.

Use a signal handler to check for SIGABRT, rather than
atf_tc_expect_signal.

xfail is for when there is a bug that we haven't fixed yet and the
test manifests a symptom of that bug -- a list of xfails is a list of
open bugs to be fixed.  In this case, we are verifying that
pthread_create _correctly_ raises SIGABRT (or fails with nonzero
return code -- both are acceptable outcomes, really), and there is no
bug here at the moment.

Prompted by (but unrelated to):
PR lib/59784: dlopening and dlclosing libpthread is broken

libpthread: Link with -Wl,-z,nodelete.
Can't safely unload libpthread because of the interaction with libc
thread stubs.

PR lib/59784: dlopening and dlclosing libpthread is broken

libpthread: Touch comment in shlib_version for recent LDADD.

This provokes relinking libpthread.so with the new arguments, without
needing manual intervention to follow a note in UPDATING.

PR lib/59784: dlopening and dlclosing libpthread is broken


To generate a diff of this commit:
cvs rdiff -u -r1.100 -r1.100.2.1 src/lib/libpthread/Makefile
cvs rdiff -u -r1.20.2.1 -r1.20.2.2 src/lib/libpthread/shlib_version
cvs rdiff -u -r1.1 -r1.1.48.1 src/tests/lib/libpthread/dlopen/t_dlopen.c \
    src/tests/lib/libpthread/dlopen/t_dso_pthread_create.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.