symbol search doesn't work

[Kurt-Shiwz]

Some lib I don't download, so don't add to include path and browse path, but I don't understand why I can't find symbol in the file.

* Operating System and version
   macos 10.12.6 
* VS Code version and if you are using the Insiders build
   1.16.1
* C/C++ extension version
   0.12.4
* Other extensions you installed and if the issue persists after disabling them
  no
* step-by-step instructions to reproduce the issue
* A small code sample, zipped up project, or open source repo we can use to verify the bug
* Relevant settings from your settings.json, c_cpp_properties.json, and/or launch.json files

{
"files.autoGuessEncoding": true,
"files.autoSave": "onFocusChange",
"files.exclude": {
".*": true,
"/CVS": true,
".a": true,
"/.DS_Store": true,
"/.git": true,
"/.hg": true,
".o": true,
".so": true,
"/.svn": true
},
"files.insertFinalNewline": true,
"files.trimTrailingWhitespace": true,
"editor.fontSize": 12.5,
"editor.formatOnType": true,
"editor.formatOnSave": true,
"editor.minimap.enabled": false,
"editor.renderWhitespace": "all",
"editor.useTabStops": false,
"terminal.external.osxExec": "iTerm.app",
"terminal.integrated.cursorBlinking": true,
"terminal.integrated.fontFamily": "menlo",
"window.openFilesInNewWindow": "off",
"workbench.colorTheme": "Monokai",
"workbench.startupEditor": "newUntitledFile",
"window.zoomLevel": 0,
"workbench.iconTheme": "vscode-icons",
// golang
"go.buildOnSave": "workspace",
"go.buildFlags": [],
"go.coverOnSave": false,
"go.formatOnSave": true,
"go.formatTool": "goreturns",
"go.goroot": "/usr/local/go",
"go.gopath": "/Users/kurt/project/go",
"go.lintFlags": [],
"go.lintOnSave": "workspace",
"go.vetFlags": [],
"go.vetOnSave": "workspace",
"go.useCodeSnippetsOnFunctionSuggest": false,
// c++
"C_Cpp.addWorkspaceRootToIncludePath": true,
"C_Cpp.autocomplete": "Default",
"C_Cpp.errorSquiggles": "Enabled",
"C_Cpp.intelliSenseEngine": "Default",
// "C_Cpp.intelliSenseEngine": "Tag Parser",
"C_Cpp.intelliSenseEngineFallback": "Enabled",
"C_Cpp.formatting": "Default",
"C_Cpp.clang_format_formatOnSave": true,
"C_Cpp.clang_format_sortIncludes": true,
"C_Cpp.clang_format_fallbackStyle": "{{BasedOnStyle: Google, IndentWidth: 4}}",
"C_Cpp.clang_format_style": "{BasedOnStyle: Google, IndentWidth: 4}",
"C_Cpp.navigation.length": 100,
//setting sync
// align
"alignment.operatorPadding": "right"
}

{
"configurations": [
{
"name": "Mac",
"includePath": [
"/usr/include/c++/4.2.1",
"/usr/include/c++/4.2.1/tr1",
"/usr/local/include",
"/usr/include",
"${workspaceRoot}"
],
"defines": [],
"intelliSenseMode": "clang-x64",
"browse": {
"path": [
"/usr/include/c++/4.2.1",
"/usr/include/c++/4.2.1/tr1",
"/usr/local/include",
"/usr/include",
"${workspaceRoot}"
],
"limitSymbolsToIncludedHeaders": true,
"databaseFilename": ""
},
"macFrameworkPath": [
"/System/Library/Frameworks",
"/Library/Frameworks"
]
},
{
"name": "Linux",
"includePath": [
"/usr/include",
"/usr/local/include",
"${workspaceRoot}"
],
"defines": [],
"intelliSenseMode": "clang-x64",
"browse": {
"path": [
"/usr/include",
"/usr/local/include",
"${workspaceRoot}"
],
"limitSymbolsToIncludedHeaders": true,
"databaseFilename": ""
}
},
{
"name": "Win32",
"includePath": [
"C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/include",
"${workspaceRoot}"
],
"defines": [
"_DEBUG",
"UNICODE"
],
"intelliSenseMode": "msvc-x64",
"browse": {
"path": [
"C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/include/*",
"${workspaceRoot}"
],
"limitSymbolsToIncludedHeaders": true,
"databaseFilename": ""
}
}
],
"version": 3
}

[sean-mcmanus]

For the Mac configuration, can you change your browse.databaseFilename property to something like "${workspaceRoot}/.vscode/vc.db" and see what it's size is? You can also try closing all your VS Code instances, then kill all the Microsoft.VSCode.CPP.* processes (dangling ones accessing the same database can cause failures). Does Go to Definition or hover work for any global variables?

[Kurt-Shiwz]

vc.db is 18M, it take 15 minutes to get it. after that i also can't find symbol. i just want find symbol in the current file, how could it happen.... @sean-mcmanus

[sean-mcmanus]

@Kurt-Shiwz What happens if you create a new file and add some uniquely named variable (int) and do a Go to Symbol in File (@)?

[Kurt-Shiwz]

Effective, but it take a long ting to tip. when i empty browse.databaseFilename it faster.
And, when I open a new project or file it will take sometime to tip, slower than sublime text.
I also find when browse.databaseFilename is set, vc.db will allways clear and rebuild when i reopen the project, even the includepath/browsepath don't change and don't add new files. it take a long time. @sean-mcmanus

[sean-mcmanus]

What do you mean by "tip"?

@Kurt-Shiwz Thanks a lot for reporting the that the database is clearing -- it's a regression (I suspect with 0.13.0). We should fix that soon. Also, the clearing is occurring even when the databaseFilename is left unchanged (it's just clearing in the default workspaceStorage location).

[Kurt-Shiwz]

it take 2 seconds to show, slower than sublime text

[sean-mcmanus]

@Kurt-Shiwz Yes, I've noticed that the symbol searching is slow (I've seen a lot longer than 2 seconds). We haven't investigated making that scenario faster yet. The database emptying is primarily due to a VS Code bug that is killing our process before we're able to mark the database as safe to use: microsoft/vscode#35196 . If you wait for >5 seconds after a database is modified, then the database clearing should not occur (unless we have additional bugs).

[bobbrow]

A fix for DB clearing has been released in 0.13.1.