goplus / goplus/llcppg

panic: NewFuncDecl: fail convert signature mq_notify: error convert baseType: unsupported refer type *ast.ScopingExpr

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bug to be confirm
Dominant language
Go
Stars
33
Forks
11
Avg merge
1h 17m
Merged PRs (30d)
51

Description

int mq_notify( mqd_t, const struct sigevent * );

It looks like clang parsed a wrong AST,

      {
        "Doc": {
          "List": [
            {
              "Text": "/* Added by Espressif - specified but not implemented functions, return ENOSYS */\n",
              "_Type": "Comment"
            }
          ],
          "_Type": "CommentGroup"
        },
        "IsConst": false,
        "IsConstructor": false,
        "IsDestructor": false,
        "IsExplicit": false,
        "IsInline": false,
        "IsOverride": false,
        "IsStatic": false,
        "IsVirtual": false,
        "Loc": {
          "File": "/Users/xxx/esp/esp-idf/components/rt/include/mqueue.h",
          "_Type": "Location"
        },
        "MangledName": "mq_notify",
        "Name": {
          "Name": "mq_notify",
          "_Type": "Ident"
        },
        "Parent": null,
        "Type": {
          "Params": {
            "List": [
              {
                "Access": 0,
                "Comment": null,
                "Doc": null,
                "IsStatic": false,
                "Names": null,
                "Type": {
                  "Name": "mqd_t",
                  "_Type": "Ident"
                },
                "_Type": "Field"
              },
              {
                "Access": 0,
                "Comment": null,
                "Doc": null,
                "IsStatic": false,
                "Names": null,
                "Type": {
                  "X": {
                    "Parent": {
                      "Name": "mq_notify",
                      "_Type": "Ident"
                    },
                    "X": {
                      "Name": "sigevent",
                      "_Type": "Ident"
                    },
                    "_Type": "ScopingExpr"
                  },
                  "_Type": "PointerType"
                },
                "_Type": "Field"
              }
            ],
            "_Type": "FieldList"
          },
          "Ret": {
            "Flags": 0,
            "Kind": 6,
            "_Type": "BuiltinType"
          },
          "_Type": "FuncType"
        },
        "_Type": "FuncDecl"
      },

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Use the mq_notify declaration in components/rt/include/mqueue.h as the reproduction case, then trace the NewFuncDecl conversion where the PointerType contains a ScopingExpr. Confirm the converter handles this clang AST without panicking and that the declaration is converted successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, go
Domain
compilers, tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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