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Intellisense Breaks When Using "import" as a part of variable name and enabling C++20 #5272
Description
Type: LanguageService
Describe the bug
- OS and Version: Linux x64 5.5.9-1-default - OpenSuse Tumbleweed
- VS Code Version: 1.44.0
- C/C++ Extension Version: 0.27
- Other extensions you installed (and if the issue persists after disabling them):
- Does this issue involve using SSH remote to run the extension on a remote machine?: No
- Description: When enabling C++20 via cppStandard settings, the IntellisenseBreaks when encountering import substring despite not being a valid keyword token
Steps to reproduce
- Enable c++20 in cppStandard settings
- Name a variable "import_xxxx"
- Intellisense breaks, syntax highlight for variables in the source file is missing, and displays an error on the variable "import_xxxx". The error is: could not find module file for module "_xxxx"
Expected behavior
The Intellisense does not fail when encountering variable name beginning with "import" in a source file.
Logs
-------- Diagnostics - 4/9/2020, 2:30:03 PM
Version: 0.27.0
Current Configuration:
{
"name": "Linux",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [],
"compilerPath": "/usr/bin/clang",
"cStandard": "c11",
"compilerArgs": [],
"cppStandard": "c++20",
"intelliSenseMode": "clang-x64",
"browse": {
"path": [
"${workspaceFolder}/**"
]
}
}
Translation Unit Mappings:
[ /home/gilang/source/v8/src/wasm/module-instantiate.cc ]:
/home/gilang/source/v8/src/wasm/module-instantiate.cc
/home/gilang/source/v8/src/execution/isolate.h
[ /home/gilang/source/v8/test/fuzzer/wasm-compile.cc ]:
/home/gilang/source/v8/test/fuzzer/wasm-compile.cc
/home/gilang/source/v8/src/execution/isolate.h
Translation Unit Configurations:
[ /home/gilang/source/v8/src/wasm/module-instantiate.cc ]:
Process ID: 13364
Memory Usage: 551 MB
Compiler Path: /usr/bin/clang
Includes:
/usr/include/c++/9
/usr/include/c++/9/x86_64-suse-linux
/usr/include/c++/9/backward
/usr/local/include
/usr/lib64/clang/9.0.1/include
/usr/include
/home/gilang/source/v8
/home/gilang/source/v8/build/gen
Standard Version: c++20
IntelliSense Mode: clang-x64
Other Flags:
--clang
--clang_version=90001
[ /home/gilang/source/v8/test/fuzzer/wasm-compile.cc ]:
Process ID: 13531
Memory Usage: 535 MB
Compiler Path: /usr/bin/clang
Includes:
/usr/include/c++/9
/usr/include/c++/9/x86_64-suse-linux
/usr/include/c++/9/backward
/usr/local/include
/usr/lib64/clang/9.0.1/include
/usr/include
/home/gilang/source/v8
/home/gilang/source/v8/build/
/home/gilang/source/v8/include
Standard Version: c++20
IntelliSense Mode: clang-x64
Other Flags:
--clang
--clang_version=90001
Total Memory Usage: 1086 MB
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 62)
cpptools/getDocumentSymbols: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 63)
cpptools/getDocumentSymbols
cpptools/activeDocumentChange: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/textEditorSelectionChange
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 64)
idle loop: reparsing the active document
Checking for syntax errors: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
Queueing IntelliSense update for files in translation unit of: /home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/textEditorSelectionChange
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 65)
cpptools/cpptools_finishUpdateSquiggles
Error squiggle count: 1
Error squiggle count: 1
Update IntelliSense time (sec): 5.417
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 66)
cpptools/activeDocumentChange: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/textEditorSelectionChange
cpptools/textEditorSelectionChange
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 67)
idle loop: reparsing the active document
Checking for syntax errors: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
Queueing IntelliSense update for files in translation unit of: /home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/cpptools_finishUpdateSquiggles
Error squiggle count: 1
Error squiggle count: 1
Update IntelliSense time (sec): 5.327
cpptools/getDiagnostics (id: 68)
terminating child process: 13912
terminating child process: 13913
terminating child process: 13914
terminating child process: 13915
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 69)
cpptools/activeDocumentChange: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/textEditorSelectionChange
idle loop: reparsing the active document
Checking for syntax errors: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
Queueing IntelliSense update for files in translation unit of: /home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/cpptools_finishUpdateSquiggles
Error squiggle count: 1
Error squiggle count: 1
Update IntelliSense time (sec): 5.56
cpptools/getCodeActions: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc (id: 70)
cpptools/activeDocumentChange: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/textEditorSelectionChange
idle loop: reparsing the active document
Checking for syntax errors: file:///home/gilang/source/v8/src/wasm/module-instantiate.cc
Queueing IntelliSense update for files in translation unit of: /home/gilang/source/v8/src/wasm/module-instantiate.cc
cpptools/cpptools_finishUpdateSquiggles
Error squiggle count: 1
Error squiggle count: 1
Update IntelliSense time (sec): 5.592
Screenshots
Additional context
The issue can be seen when browsing Chromium's V8 source code, and is gone when reverting to use C++17
Activity
sean-mcmanus commentedon Apr 9, 2020
Thanks for reporting this. It's a bug inherited from VS 2019, so I've filed a bug at https://developercommunity.visualstudio.com/content/problem/985100/c-intellisense-with-modules-enabled-incorrectly-gi.html .
sean-mcmanus commentedon Jul 16, 2020
Fixed with 0.29.0.