when compile lambda iterator for JS, internal error: symbol has no generated name: true

[litlighilit]

Description

The smallest demo:

let i{.used.} = iterator(): char =
  yield 'c'

can compile for c/cpp other than js.

If compiled via nim js, then Nim compiler terminates with an error:
error: <nim path>\lib\system\basic_types.nim(46, 16) Error: internal error: symbol has no generated name: true

Nim Version

Nim Compiler Version 2.1.1 [Windows: amd64]
Compiled at 2024-03-07
Copyright (c) 2006-2024 by Andreas Rumpf

active boot switches: -d:release

And

Nim Compiler Version 2.0.0 [Windows: amd64]
Compiled at 2023-08-01
Copyright (c) 2006-2023 by Andreas Rumpf

active boot switches: -d:release

And

Nim Compiler Version 1.6.14 [Windows: amd64]
Compiled at 2023-06-27
Copyright (c) 2006-2023 by Andreas Rumpf

active boot switches: -d:release

Current Output

<compiler inner error: ... > (describled above)

Expected Output

No response

Possible Solution

No response

Additional Information

[juancarlospaco]

!nim js

let i{.used.} = iterator(): char =
  yield 'c'

[github-actions]

🐧 Linux bisect by @juancarlospaco (collaborator)

devel 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-#devel/lib/system/basic_types.nim(46, 16) Error: internal error: symbol has no generated name: true
assertions.nim(34)       raiseAssert
Error: unhandled exception: errInternal [AssertionDefect]

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:48
• Finished 2024-03-09T21:02:48
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

stable 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-2.0.2/lib/system/basic_types.nim(46, 16) Error: internal error: symbol has no generated name: true
assertions.nim(34)       raiseAssert
Error: unhandled exception: options.nim(681, 5) `false` errInternal [AssertionDefect]

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:50
• Finished 2024-03-09T21:02:50
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

2.0.2 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-2.0.2/lib/system/basic_types.nim(46, 16) Error: internal error: symbol has no generated name: true
assertions.nim(34)       raiseAssert
Error: unhandled exception: options.nim(681, 5) `false` errInternal [AssertionDefect]

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:50
• Finished 2024-03-09T21:02:50
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

1.6.14 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-1.6.14/lib/system/basic_types.nim(16, 16) Error: internal error: symbol has no generated name: true
fatal.nim(54)            sysFatal
Error: unhandled exception: options.nim(645, 14) `false` errInternal [AssertionDefect]

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:53
• Finished 2024-03-09T21:02:53
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

1.4.8 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-1.4.8/lib/system/basic_types.nim(16, 16) Error: internal error: symbol has no generated name: true
No stack traceback available
To create a stacktrace, rerun compilation with './koch temp js <file>', see https://nim-lang.github.io/Nim/intern.html#debugging-the-compiler for details

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:55
• Finished 2024-03-09T21:02:55
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

1.2.18 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-1.2.18/lib/system/basic_types.nim(16, 16) Error: internal error: symbol has no generated name: true
No stack traceback available
To create a stacktrace, rerun compilation with ./koch temp js <file>

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:57
• Finished 2024-03-09T21:02:57
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

1.0.10 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/.choosenim/toolchains/nim-1.0.10/lib/system.nim(45, 16) Error: internal error: symbol has no generated name: true
No stack traceback available
To create a stacktrace, rerun compilation with ./koch temp js <file>

IR

Compiled filesize 0 bytes (0 bytes)

Stats

• Started 2024-03-09T21:02:59
• Finished 2024-03-09T21:02:59
• Duration

AST

nnkStmtList.newTree(
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      nnkPragmaExpr.newTree(
        newIdentNode("i"),
        nnkPragma.newTree(
          newIdentNode("used")
        )
      ),
      newEmptyNode(),
      nnkIteratorDef.newTree(
        newEmptyNode(),
        newEmptyNode(),
        newEmptyNode(),
        nnkFormalParams.newTree(
          newIdentNode("char")
        ),
        newEmptyNode(),
        newEmptyNode(),
        nnkStmtList.newTree(
          nnkYieldStmt.newTree(
            newLit('c')
          )
        )
      )
    )
  )
)

Stats

• GCC 11.4.0
• Clang 14.0.0
• NodeJS 19.1
• Created 2024-03-09T21:02:09Z
• Comments 1
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch --run -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

🤖 Bug found in 14 minutes bisecting 7 commits at 0 commits per second

[metagn]

JS backend doesn't support closure iterators, this is supposed to give a legible error since #7109 was fixed but doesn't seem to in this case.

Would also be fixed by implementing closure iterators in JS.