Terraform crash on attempted autocomplete of workspace name

[socketbox]

Terraform Version

[2021-12-17 02:48:04]» terraform version                        
Terraform v1.1.1                                                
on linux_amd64                                                  
+ provider registry.terraform.io/cloudflare/cloudflare v3.5.0   
+ provider registry.terraform.io/hashicorp/google v3.79.0       
+ provider registry.terraform.io/hashicorp/google-beta v3.75.0  
+ provider registry.terraform.io/hashicorp/kubernetes v2.4.1    
+ provider registry.terraform.io/hashicorp/null v3.1.0          
+ provider registry.terraform.io/hashicorp/random v3.1.0        

Terraform Configuration Files

Not sure if this is applicable

Debug Output

                                                                                                                                                                │
!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!                                                                                       │
                                                                                                                                                               │
runtime error: invalid memory address or nil pointer dereferencegoroutine 1 [running]:                                                                         │
runtime/debug.Stack()                                                                                                                                          │
        /usr/local/go/src/runtime/debug/stack.go:24 +0x65                                                                                                      │
runtime/debug.PrintStack()                                                                                                                                     │
        /usr/local/go/src/runtime/debug/stack.go:16 +0x19                                                                                                      │
github.com/hashicorp/terraform/internal/logging.PanicHandler()                                                                                                 │
        /home/circleci/project/project/internal/logging/panic.go:44 +0xb5                                                                                      │
panic({0x221d240, 0x3ed5b10})                                                                                                                                  │
        /usr/local/go/src/runtime/panic.go:1047 +0x266                                                                                                         │
github.com/hashicorp/terraform/internal/command.completePredictSequence.Predict(...)                                                                           │
        /home/circleci/project/project/internal/command/autocomplete.go:32                                                                                     │
github.com/posener/complete.(*Command).predict(0xc0001af590, {{0xc0000db230, 0x1, 0x1}, {0xc0000db230, 0x0, 0x1}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:107 +0x5fe                                                                     │
github.com/posener/complete.(*Command).predict(0xc0001af560, {{0xc0000db220, 0x2, 0x2}, {0xc0000db220, 0x1, 0x2}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5                                                                      │
github.com/posener/complete.(*Command).predict(0xc00036ec40, {{0xc0000db210, 0x3, 0x3}, {0xc0000db210, 0x2, 0x3}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5                                                                      │
github.com/posener/complete.(*Command).Predict(...)                                                                                                            │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:27                                                                             │
github.com/posener/complete.(*Complete).Complete(0xc00036ec40)                                                                                                 │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/complete.go:69 +0x1b9                                                                     │
github.com/mitchellh/cli.(*CLI).Run(0xc00044cb40)                                                                                                              │
        /home/circleci/go/pkg/mod/github.com/mitchellh/[email protected]/cli.go:184 +0xaa                                                                             │
main.realMain()                                                                                                                                                │
        /home/circleci/project/project/main.go:309 +0x1509                                                                                                     │
main.main()                                                                                                                                                    │
        /home/circleci/project/project/main.go:58 +0x19                                                                                                        │
                                                                                                                                                               │
!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!                                                                                       │
                                                                                                                                                               │
Terraform crashed! This is always indicative of a bug within Terraform.                                                                                        │
Please report the crash with Terraform[1] so that we can fix this.                                                                                             │
                                                                                                                                                               │
When reporting bugs, please include your terraform version, the stack trace                                                                                    │
shown below, and any additional information which may help replicate the issue.                                                                                │
                                                                                                                                                               │
[1]: https://github.com/hashicorp/terraform/issues                                                                                                             │
                                                                                                                                                               │
!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!                                                                                       │
                                                                                                                                                               │
runtime error: invalid memory address or nil pointer dereferencegoroutine 1 [running]:                                                                         │
runtime/debug.Stack()                                                                                                                                          │
        /usr/local/go/src/runtime/debug/stack.go:24 +0x65                                                                                                      │
runtime/debug.PrintStack()                                                                                                                                     │
        /usr/local/go/src/runtime/debug/stack.go:16 +0x19                                                                                                      │
github.com/hashicorp/terraform/internal/logging.PanicHandler()                                                                                                 │
        /home/circleci/project/project/internal/logging/panic.go:44 +0xb5                                                                                      │
panic({0x221d240, 0x3ed5b10})                                                                                                                                  │
        /usr/local/go/src/runtime/panic.go:1047 +0x266                                                                                                         │
github.com/hashicorp/terraform/internal/command.completePredictSequence.Predict(...)                                                                           │
        /home/circleci/project/project/internal/command/autocomplete.go:32                                                                                     │
github.com/posener/complete.(*Command).predict(0xc000662f90, {{0xc000164370, 0x1, 0x1}, {0xc000164370, 0x0, 0x1}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:107 +0x5fe                                                                     │
github.com/posener/complete.(*Command).predict(0xc000662f60, {{0xc000164360, 0x2, 0x2}, {0xc000164360, 0x1, 0x2}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5                                                                      │
github.com/posener/complete.(*Command).predict(0xc0004860e0, {{0xc000164350, 0x3, 0x3}, {0xc000164350, 0x2, 0x3}, {0xc00005e265, 0x4}, {0xc00005e25e, ...}})   │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5                                                                      │
github.com/posener/complete.(*Command).Predict(...)                                                                                                            │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/command.go:27                                                                             │
github.com/posener/complete.(*Complete).Complete(0xc0004860e0)                                                                                                 │
        /home/circleci/go/pkg/mod/github.com/posener/[email protected]/complete.go:69 +0x1b9                                                                     │
github.com/mitchellh/cli.(*CLI).Run(0xc000454280)                                                                                                              │
        /home/circleci/go/pkg/mod/github.com/mitchellh/[email protected]/cli.go:184 +0xaa                                                                             │
main.realMain()                                                                                                                                                │
        /home/circleci/project/project/main.go:309 +0x1509                                                                                                     │
main.main()                                                                                                                                                    │
        /home/circleci/project/project/main.go:58 +0x19                                                                                                        │
                       tf workspace delete case                                                                                                                │
Completing `corrections'                                                                                                                                       │

Expected Behavior

After typing the first four letters of a workspace and hitting Tab, the name of either one of the two workspaces that begin with the string case should have been displayed.

Actual Behavior

The application crashed. See crash output above.

Steps to Reproduce

1. Create a workspace named foobar.
2. Create a second workspace called foobaz
3. Attempt to delete the first workspace by typing terraform workspace delete foo<Tab>

Additional Context

Not that this is unusual, but I'm running terraform inside of tmux in zsh.

References

I searched for the word "crash" in open issues but found none.

[crw]

Thanks for this report, I was able to easily reproduce this on terraform 1.1.2 / darwin arm64 in zsh.

[kbechler]

I was able to reproduce it on

> terraform version
Terraform v1.1.2
on linux_amd64
+ provider registry.terraform.io/kreuzwerker/docker v2.13.0

and bash autocompletion

[0xdnL]

Can confirm this crash

terraform version
Terraform v1.1.3
on darwin_amd64

!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!

runtime error: invalid memory address or nil pointer dereference
goroutine 1 [running]:
runtime/debug.Stack()
        /usr/local/go/src/runtime/debug/stack.go:24 +0x65
runtime/debug.PrintStack()
        /usr/local/go/src/runtime/debug/stack.go:16 +0x19
github.com/hashicorp/terraform/internal/logging.PanicHandler()
        /Users/distiller/project/project/internal/logging/panic.go:55 +0x154
panic({0x2e24ae0, 0x4aea0d0})
        /usr/local/go/src/runtime/panic.go:1047 +0x266
github.com/hashicorp/terraform/internal/command.completePredictSequence.Predict(...)
        /Users/distiller/project/project/internal/command/autocomplete.go:32
github.com/posener/complete.(*Command).predict(0xc00078f140, {{0xc0007fde90, 0x1, 0x3}, {0xc0007fde90, 0x0, 0x3}, {0x0, 0x0}, {0xc00005a10e, ...}})
        /Users/distiller/go/pkg/mod/github.com/posener/[email protected]/command.go:107 +0x5fe
github.com/posener/complete.(*Command).predict(0xc00078f110, {{0xc0007fde80, 0x2, 0x4}, {0xc0007fde80, 0x1, 0x4}, {0x0, 0x0}, {0xc00005a10e, ...}})
        /Users/distiller/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5
github.com/posener/complete.(*Command).predict(0xc00037c380, {{0xc0007fde70, 0x3, 0x5}, {0xc0007fde70, 0x2, 0x5}, {0x0, 0x0}, {0xc00005a10e, ...}})
        /Users/distiller/go/pkg/mod/github.com/posener/[email protected]/command.go:73 +0x9a5
github.com/posener/complete.(*Command).Predict(...)
        /Users/distiller/go/pkg/mod/github.com/posener/[email protected]/command.go:27
github.com/posener/complete.(*Complete).Complete(0xc00037c380)
        /Users/distiller/go/pkg/mod/github.com/posener/[email protected]/complete.go:69 +0x1b9
github.com/mitchellh/cli.(*CLI).Run(0xc0005417c0)
        /Users/distiller/go/pkg/mod/github.com/mitchellh/[email protected]/cli.go:184 +0xaa
main.realMain()
        /Users/distiller/project/project/main.go:309 +0x1509
main.main()
        /Users/distiller/project/project/main.go:58 +0x19

[github-actions]

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.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.