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-rw-r--r--winsup/mingw/include/signal.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/winsup/mingw/include/signal.h b/winsup/mingw/include/signal.h
index b0a817334..e13863263 100644
--- a/winsup/mingw/include/signal.h
+++ b/winsup/mingw/include/signal.h
@@ -78,11 +78,14 @@ typedef void (*__p_sig_fn_t)(int);
/*
* These are special values of signal handler pointers which are
* used to send a signal to the default handler (SIG_DFL), ignore
- * the signal (SIG_IGN), or indicate an error return (SIG_ERR).
+ * the signal (SIG_IGN), indicate an error return (SIG_ERR),
+ * get an error (SIG_SGE), or acknowledge (SIG_ACK).
*/
#define SIG_DFL ((__p_sig_fn_t) 0)
#define SIG_IGN ((__p_sig_fn_t) 1)
#define SIG_ERR ((__p_sig_fn_t) -1)
+#define SIG_SGE ((__p_sig_fn_t) 3)
+#define SIG_ACK ((__p_sig_fn_t) 4)
#ifdef __cplusplus
extern "C" {