[glibc] hurd: initialize libpthread before starting the signal thread

[Samuel Thibault]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2aa072d395bf93bfc6aa570983911f1db40a8dac

commit 2aa072d395bf93bfc6aa570983911f1db40a8dac
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Fri Nov 13 01:10:42 2020 +0000

    hurd: initialize libpthread before starting the signal thread
    
    We cannot rely on csu calling __pthread_initialize_minimal before
    posixland_init, in some cases _init gets called before that.

Diff:
---
 hurd/hurdinit.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hurd/hurdinit.c b/hurd/hurdinit.c
index 06a2d3b7fd..7faa51b352 100644
--- a/hurd/hurdinit.c
+++ b/hurd/hurdinit.c
@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <hurd.h>
 #include <hurd/port.h>
+#include <ldsodefs.h>
 #include "set-hooks.h"
 #include "hurdmalloc.h"		/* XXX */
 
@@ -116,6 +117,11 @@ _hurd_libc_proc_init (char **argv)
 {
   if (_hurd_portarray)
     {
+      /* We will start the signal thread, so we need to initialize libpthread
+       * if linked in.  */
+      if (__pthread_initialize_minimal != NULL)
+	__pthread_initialize_minimal ();
+
       /* Tell the proc server we exist, if it does.  */
       if (_hurd_portarray[INIT_PORT_PROC] != MACH_PORT_NULL)
 	_hurd_new_proc_init (argv, _hurd_intarray, _hurd_intarraysize);