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-rw-r--r--stdlib/sys.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/stdlib/sys.ml b/stdlib/sys.ml
index 1e76f3c9f..3f50f6ff2 100644
--- a/stdlib/sys.ml
+++ b/stdlib/sys.ml
@@ -54,6 +54,7 @@ let sigtstp = -17
let sigttin = -18
let sigttou = -19
let sigvtalrm = -20
+let sigprof = -21
exception Break