count.index*32: unknown count type: 0x0

[Fodoj]

cidr_block = "${concat("10.0.0.", count.index*32, "/2")}" => count.index*32: unknown count type: 0x0

What could be the issue here?

[phinze]

Interesting. Looks like a parsing bug. If you space out the math it works!

resource "aws_subnet" "foo" {
  count = "3"
  cidr_block = "${concat("10.0.0.", count.index * 32, "/2")}"
}

Tagged and we'll get this fixed.

[Fodoj]

Thanks! If you need help fixing it, just point me into right direction and I will prepare PR in next few days

[Fodoj]

@mitchellh @phinze another bug:

#{128 + count.index * 32} => 4096

I'd like to get it fixed, should I take a look at github.com/hashicorp/terraform/config/lang/ast? Which other components are involved?

[mitchellh]

@Fodoj What is the bug there? Our language doesn't do order of ops on its own (all operator precedence is the same). Wrap things in parens to get the order you want.

[Fodoj]

@mitchellh I would normally expect basic math operations to function as they always do. So that kind of operator precedence is totally unexpected and feels unusual at least.

[mitchellh]

@Fodoj If you'd like to add precedence that's fine with me, in that case

[Fodoj]

@mitchellh sure. Could you point me into required types in codebase? that's mostly related to ast code, right?

[mitchellh]

Precedence should just be the parser code, the YACC syntax (.y) in the config/lang directory.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

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