1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/recog.c b/gcc/recog.c
index 94e7abb..b20f80b 100644
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -2093,6 +2093,7 @@ preprocess_constraints ()
 {
   int i;
 
+  bzero (recog_op_alt, sizeof recog_op_alt);
   for (i = 0; i < recog_n_operands; i++)
     {
       int j;