"reference to undefined label" error during compilation

General
1

Hi all,

I’m creating a simple app to experiment with branching TEAL branching functionality. The approval program code is the following:

#pragma version 4

//check number of args is 1
txn NumAppArgs
int 1
==

// branch if 1 arg was supplied, return 1 ow
bnz valid_arg:
int 1
return

// return 2 if branching was successful (accept anyway)
valid_arg:
int 2
return

It seems like the following error is thrown when trying to compile the code:

approval_test.teal: 7: reference to undefined label "valid_arg:"
approval_test.teal: 1 error

I’m using the Your First Application template as a reference and not sure why the branch (bnz) does not recognize the label a few lines down. Any ideas?

Cheers!

2

instead, write bnz valid_arg

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