Question

我正在学习使用clang，我正在努力解析代码，我尝试#include标准头文件。

这是我的代码：

#include <iostream>

#include <clang\Basic\DiagnosticOptions.h>
#include <clang\Frontend\TextDiagnosticPrinter.h>
#include <llvm\Support\raw_ostream.h>
#include <clang\Basic\LangOptions.h>
#include <clang\Basic\FileSystemOptions.h>
#include <clang\Basic\FileManager.h>
#include <clang\Basic\SourceManager.h>
#include <clang\Basic\TargetOptions.h>
#include <clang\Basic\TargetInfo.h>
#include <clang\Frontend\CompilerInstance.h>
#include <clang\Lex\HeaderSearch.h>
#include <clang\Lex\HeaderSearchOptions.h>
#include <clang\Lex\Preprocessor.h>

int main(void)
{
    clang::DiagnosticOptions diagnosticOptions;
    diagnosticOptions.VerifyDiagnostics = 1;

    clang::TextDiagnosticPrinter *pTextDiagnosticPrinter = new clang::TextDiagnosticPrinter(llvm::outs(), &diagnosticOptions);

    llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs> pDiagIDs(new clang::DiagnosticIDs);

    clang::DiagnosticsEngine *pDiagnosticsEngine = new clang::DiagnosticsEngine(pDiagIDs, &diagnosticOptions);
    pDiagnosticsEngine->setClient(pTextDiagnosticPrinter, true);

    clang::LangOptions languageOptions;

    clang::FileSystemOptions fileSystemOptions;

    clang::FileManager fileManager(fileSystemOptions);

    clang::SourceManager sourceManager(*pDiagnosticsEngine, fileManager);

    std::shared_ptr<clang::TargetOptions> targetOptions = std::make_shared<clang::TargetOptions>();
    (*targetOptions).Triple = llvm::sys::getDefaultTargetTriple();

    clang::TargetInfo *pTargetInfo = clang::TargetInfo::CreateTargetInfo(*pDiagnosticsEngine, targetOptions);

    clang::CompilerInstance compInst;

    clang::IntrusiveRefCntPtr<clang::HeaderSearchOptions> hsOptions(new clang::HeaderSearchOptions);
    hsOptions.operator*().UseStandardSystemIncludes = 0;
    hsOptions.operator*().UseStandardCXXIncludes = 0;
    hsOptions.operator*().UseBuiltinIncludes = 0;

    hsOptions.operator*().AddPath("c:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.10240.0\\ucrt", clang::frontend::IncludeDirGroup::Angled, false, false);

    clang::HeaderSearch headerSearch(hsOptions, sourceManager, *pDiagnosticsEngine, languageOptions, pTargetInfo);

    clang::IntrusiveRefCntPtr<clang::PreprocessorOptions> ppOptions;

    clang::Preprocessor preprocessor(ppOptions, *pDiagnosticsEngine, languageOptions, sourceManager, headerSearch, compInst);

    const clang::FileEntry *pFile = fileManager.getFile("test.c");

    clang::FileID mainFileId = sourceManager.createFileID(pFile, clang::SourceLocation(), 
        clang::SrcMgr::CharacteristicKind::C_User);

    sourceManager.setMainFileID(mainFileId);

    preprocessor.EnterMainSourceFile();

    clang::Token token;

    do 
    {
        preprocessor.Lex(token);

        if (pDiagnosticsEngine->hasErrorOccurred())
        {
            break;
        }

        preprocessor.DumpToken(token);

        std::cerr << std::endl;
    } 
    while (token.isNot(clang::tok::eof));
}

这是我要解析的代码：

#include <stdio.h>

int i = 4;

extern int j;

int main()
{
    printf("Hello World\n");
    return 0;
}

这是我得到的错误：

断言失败：TextDiag＆amp;＆amp; “外部来源的意外诊断文件处理“，文件 C：\ SOFTWARE \ LLVM \工具\铛\ LIB \前端\ TextDiagnosticPrinter.cpp，第153行

注意，如果我尝试包含与源文件位于同一文件夹中的文件，那么它可以正常工作。

我正在使用最新版本的llvm和clang（3.7.0）。我正在使用Windows 8.1。 Visual studio版本是2015社区版。我试图遵循本教程：https://github.com/loarabia/Clang-tutorial/wiki/TutorialOrig

当Clang包含标准头的#include时，它无法解析C代码

0 个答案: