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KDAB / hotspot

The Linux perf GUI for performance analysis.
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clangd warnings (parsers/perf/perfparser.cpp) #552

Closed GitMensch closed 1 year ago

GitMensch commented 1 year ago

Describe the bug Seen with the updated #445 - clangd has several complains

To Reproduce Steps to reproduce the behavior: Run clangd manually (using compile_commands.json which may be created by passing `-D

Possibly expected behavior Warning free. At least a one time check seems reasonable.

clangd complains in json format as this is most easy for me to copy+paste

[{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
    "code": {
        "value": "unused-includes",
        "target": {
            "$mid": 1,
            "external": "https://clangd.llvm.org/guides/include-cleaner",
            "path": "/guides/include-cleaner",
            "scheme": "https",
            "authority": "clangd.llvm.org"
        }
    },
    "severity": 4,
    "message": "Included header functional is not used directly (fix available)",
    "source": "clangd",
    "startLineNumber": 32,
    "startColumn": 1,
    "endLineNumber": 32,
    "endColumn": 22,
    "tags": [
        1
    ]
},{
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    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator>>'",
    "source": "clang",
    "startLineNumber": 277,
    "startColumn": 14,
    "endLineNumber": 277,
    "endColumn": 22,
    "tags": [
        1
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},{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator<<'",
    "source": "clang",
    "startLineNumber": 282,
    "startColumn": 8,
    "endLineNumber": 282,
    "endColumn": 16,
    "tags": [
        1
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},{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator>>'",
    "source": "clang",
    "startLineNumber": 371,
    "startColumn": 14,
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    "endColumn": 22,
    "tags": [
        1
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},{
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    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator<<'",
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    "startLineNumber": 376,
    "startColumn": 8,
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    "endColumn": 16,
    "tags": [
        1
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},{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator>>'",
    "source": "clang",
    "startLineNumber": 393,
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    "endColumn": 22,
    "tags": [
        1
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},{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
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    "severity": 4,
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    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
    "severity": 4,
    "message": "Unused function 'operator>>'",
    "source": "clang",
    "startLineNumber": 414,
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    "tags": [
        1
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},{
    "resource": "/workspace/hotspot/src/parsers/perf/perfparser.cpp",
    "owner": "_generated_diagnostic_collection_name_#4",
    "code": "-Wunused-function",
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milianw commented 1 year ago

it seems like you have a ton of debatable clang-tidy checks enabled - we have a .clang-tidy with some hand-picked rules enabled. and our CI doesn't report any issues, so could it be that your clangd simply doesn't pick up our config?

anyhow, if you want to fix those feel free to do, but some are simply false positives like or not to my liking - esp. those in the tst_* files or relating to -Wgnu-zero-variadic-macro-arguments.