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-rw-r--r--nptl/allocatestack.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 3e057e9c7b..2dfecf0181 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -272,6 +272,9 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
       /* This is a user-provided stack.  */
       pd->user_stack = true;
 
+      /* There is at least one more thread.  */
+      pd->header.data.multiple_threads = 1;
+
       /* Allocate the DTV for this thread.  */
       if (_dl_allocate_tls (pd) == NULL)
 	/* Something went wrong.  */
@@ -337,6 +340,9 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
 	  /* Initialize the lock.  */
 	  pd->lock = LLL_LOCK_INITIALIZER;
 
+	  /* There is at least one more thread.  */
+	  pd->header.data.multiple_threads = 1;
+
 	  /* Allocate the DTV for this thread.  */
 	  if (_dl_allocate_tls (pd) == NULL)
 	    {