* compile.c (iseq_specialized_instruction): check argc.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@13905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 7 deletions

diff --git a/compile.c b/compile.c
index 523c753dc..810fb0e59 100644
--- a/compile.c
+++ b/compile.c
@@ -1482,13 +1482,15 @@ iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
 	    }
 	}
 
-	if (mid == idSend || mid == id__send ||
-	    mid == idSendBang ||
-	    mid == id__send__ ) {
-	    OPERAND_AT(iobj, 3) |= INT2FIX(VM_CALL_SEND_BIT);
-	}
-	if (mid == idSendBang) {
-	    OPERAND_AT(iobj, 3) |= INT2FIX(VM_CALL_SEND_BANG_BIT);
+	if (argc > 0) {
+	    if (mid == idSend || mid == id__send ||
+		mid == idSendBang ||
+		mid == id__send__ ) {
+		OPERAND_AT(iobj, 3) |= INT2FIX(VM_CALL_SEND_BIT);
+	    }
+	    if (mid == idSendBang) {
+		OPERAND_AT(iobj, 3) |= INT2FIX(VM_CALL_SEND_BANG_BIT);
+	    }
 	}
     }
     return COMPILE_OK;