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-rw-r--r--thread_pthread.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/thread_pthread.c b/thread_pthread.c
index 0da4aee67f..1688d3d0df 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1130,7 +1130,7 @@ thread_timer(void *p)
if (TT_DEBUG) WRITE_CONST(2, "start timer thread\n");
-#ifdef __linux__
+#if defined(__linux__) && defined(PR_SET_NAME)
prctl(PR_SET_NAME, "ruby-timer-thr");
#endif