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-rw-r--r--src/or/or.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/or/or.h b/src/or/or.h
index 8a9c1cf76e..bbb9192757 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -119,6 +119,7 @@
* conflict with system-defined signals. */
#define SIGNEWNYM 129
#define SIGCLEARDNSCACHE 130
+#define SIGHEARTBEAT 131
#if (SIZEOF_CELL_T != 0)
/* On Irix, stdlib.h defines a cell_t type, so we need to make sure