panic: runtime error: index out of range terraform crashes

[hkamat]

Terraform version:
Terraform v0.12.29

Issue Description
Running terraform to create a simple resource group results in terraform crashing.

Terraform actual output
crash.log

Probable Cause
I had copied some of the variable information in the json file from microsoft one note. This caused some special characters to appear which were not directly visible.
As I kept using json terraform kept crashing. Once I moved to tfvars file I got errors saying unrecognised
characters [it did not show which character though] properly from terraform.

Expected Output
Similar to tfvars as input i should get an error message for json file also and terraform should not crash.

JSON File
terraform.tfvars.log

[alisdair]

Thanks for reporting this crash. Could you upload the exact JSON file which causes the panic (after removing any sensitive data)?

[hkamat]

Done. Edited in the original comment for future reference.
Missed to do this before. Couldn't upload as .json so changed to .log

[alisdair]

This crash has been fixed as of 0.13.0-rc1, which now displays a more useful error diagnostic. The upstream pull request fixing this is hashicorp/hcl#358. Here's the result:

I think this is a pretty reasonable diagnostic, which would hopefully have been more helpful in identifying this invalid whitespace.

Closing out. Thanks again for reporting!

[ghost]

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