File 0534-erts-Fix-ethr_setname-for-NetBSD.patch of Package erlang
From 3b38b6c4c6f63054ebca3118b850f62840bbb6cf Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Wed, 11 Feb 2026 18:48:41 +0100
Subject: [PATCH] erts: Fix ethr_setname() for NetBSD
NetBSD has pthread_setname_np() with 3 arguments.
---
erts/config.h.in | 5 ++++-
erts/configure | 21 +++++++++++++++++++++
erts/lib_src/pthread/ethread.c | 2 ++
make/autoconf/otp.m4 | 6 +++++-
4 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/erts/config.h.in b/erts/config.h.in
index 3831b8be27..b31820cbd8 100644
--- a/erts/config.h.in
+++ b/erts/config.h.in
@@ -225,9 +225,12 @@
/* Define if you have darwin style pthread_setname_np */
#undef ETHR_HAVE_PTHREAD_SETNAME_NP_1
-/* Define if you have linux style pthread_setname_np */
+/* Define if you have linux style pthread_setname_np with 2 args */
#undef ETHR_HAVE_PTHREAD_SETNAME_NP_2
+/* Define if you have netbsd style pthread_setname_np with 3 args */
+#undef ETHR_HAVE_PTHREAD_SETNAME_NP_3
+
/* Define if you have bsd style pthread_set_name_np */
#undef ETHR_HAVE_PTHREAD_SET_NAME_NP_2
diff --git a/erts/configure b/erts/configure
index 74b24de63a..3235168362 100755
--- a/erts/configure
+++ b/erts/configure
@@ -12896,6 +12896,24 @@ rm -f core conftest.err conftest.$ac_objext conftest.beam \
conftest$ac_exeext conftest.$ac_ext
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
+#define __USE_GNU
+ #include <pthread.h>
+int
+main (void)
+{
+pthread_setname_np(pthread_self(), "%s", "name");
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+ pthread_setname=netbsd
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+ conftest$ac_exeext conftest.$ac_ext
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
#define _DARWIN_C_SOURCE
#include <pthread.h>
int
@@ -12917,6 +12935,9 @@ printf "%s\n" "$pthread_setname" >&6; }
case $with_threadnames-$pthread_setname in
yes-linux)
printf "%s\n" "#define ETHR_HAVE_PTHREAD_SETNAME_NP_2 1" >>confdefs.h
+;;
+ yes-netbsd)
+printf "%s\n" "#define ETHR_HAVE_PTHREAD_SETNAME_NP_3 1" >>confdefs.h
;;
yes-bsd)
printf "%s\n" "#define ETHR_HAVE_PTHREAD_SET_NAME_NP_2 1" >>confdefs.h
diff --git a/erts/lib_src/pthread/ethread.c b/erts/lib_src/pthread/ethread.c
index 88536d6f2c..9f2b69157d 100644
--- a/erts/lib_src/pthread/ethread.c
+++ b/erts/lib_src/pthread/ethread.c
@@ -504,6 +504,8 @@ ethr_setname(char *name)
pthread_set_name_np(ethr_self(), name);
#elif defined(ETHR_HAVE_PTHREAD_SETNAME_NP_1)
pthread_setname_np(name);
+#elif defined(ETHR_HAVE_PTHREAD_SETNAME_NP_3)
+ pthread_setname_np(ethr_self(), "%s", name);
#elif defined(__HAIKU__)
thread_id haiku_tid;
haiku_tid = get_pthread_thread_id(ethr_self());
diff --git a/make/autoconf/otp.m4 b/make/autoconf/otp.m4
index 2ca07d8d0e..57fd35208b 100644
--- a/make/autoconf/otp.m4
+++ b/make/autoconf/otp.m4
@@ -2120,12 +2120,16 @@ AS_CASE(
#include <pthread.h>]], [[pthread_setname_np(pthread_self(), "name");]])],[pthread_setname=linux],[])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define __USE_GNU
#include <pthread.h>]], [[pthread_set_name_np(pthread_self(), "name");]])],[pthread_setname=bsd],[])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define __USE_GNU
+ #include <pthread.h>]], [[pthread_setname_np(pthread_self(), "%s", "name");]])],[pthread_setname=netbsd],[])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define _DARWIN_C_SOURCE
#include <pthread.h>]], [[pthread_setname_np("name");]])],[pthread_setname=darwin],[])
AC_MSG_RESULT([$pthread_setname])
case $with_threadnames-$pthread_setname in
yes-linux) AC_DEFINE(ETHR_HAVE_PTHREAD_SETNAME_NP_2, 1,
- [Define if you have linux style pthread_setname_np]);;
+ [Define if you have linux style pthread_setname_np with 2 args]);;
+ yes-netbsd) AC_DEFINE(ETHR_HAVE_PTHREAD_SETNAME_NP_3, 1,
+ [Define if you have netbsd style pthread_setname_np with 3 args]);;
yes-bsd) AC_DEFINE(ETHR_HAVE_PTHREAD_SET_NAME_NP_2, 1,
[Define if you have bsd style pthread_set_name_np]);;
yes-darwin) AC_DEFINE(ETHR_HAVE_PTHREAD_SETNAME_NP_1, 1,
--
2.51.0
