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-rw-r--r--src/decode.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/decode.h b/src/decode.h
index db4a0a2..724e195 100644
--- a/src/decode.h
+++ b/src/decode.h
@@ -64,6 +64,7 @@
#define M_CONTINUE 1
#define M_EXIT 0
+#define M_ERROR (-1)
#define MIN(a, b) (((a) < (b))? (a): (b))