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-rw-r--r--src/codedump.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/codedump.c b/src/codedump.c
index f662e0cb3..fa06260f7 100644
--- a/src/codedump.c
+++ b/src/codedump.c
@@ -463,7 +463,7 @@ codedump(mrb_state *mrb, const mrb_irep *irep)
print_lv_a(mrb, irep, a);
break;
CASE(OP_STRCAT, B):
- printf("OP_STRCAT\tR%d\t", a);
+ printf("OP_STRCAT\tR%d\tR%d", a, a+1);
print_lv_a(mrb, irep, a);
break;
CASE(OP_HASH, BB):