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-rw-r--r--nptl/vars.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/vars.c b/nptl/vars.c
index 8f3023cfc0..43a6e3957c 100644
--- a/nptl/vars.c
+++ b/nptl/vars.c
@@ -32,7 +32,9 @@ size_t __default_stacksize attribute_hidden
 int __is_smp attribute_hidden;
 
 #ifndef TLS_MULTIPLE_THREADS_IN_TCB
-/* Variable set to a nonzero value if more than one thread runs or ran.  */
+/* Variable set to a nonzero value either if more than one thread runs or ran,
+   or if a single-threaded process is trying to cancel itself.  See
+   nptl/descr.h for more context on the single-threaded process case.  */
 int __pthread_multiple_threads attribute_hidden;
 #endif