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-rw-r--r--sync_pipe.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sync_pipe.h b/sync_pipe.h
index 455b2b4bd6..0fac40b5f0 100644
--- a/sync_pipe.h
+++ b/sync_pipe.h
@@ -62,6 +62,7 @@
* Win32 only: Indications sent out on the signal pipe (from parent to child)
* (UNIX-like sends signals for this)
*/
+#define SP_INIT 'I' /* child process initialized */
#define SP_QUIT 'Q' /* "gracefully" capture quit message (SIGUSR1) */
/* write a single message header to the recipient pipe */