Question

在C ++编码时，我经常会收到一个非常长的错误消息，表示简单错误，例如函数调用中的参数不匹配或参数模糊。这些错误消息通常跨越几十甚至几百行，并且很难找到实际错误的位置。

是否可以对输出进行一些操作以找到错误位置＆＃34;懒洋洋地＆＃34;？

我正在寻找类似的东西：

make |& xclip_error_loc
... (make output)
(prints and/or adds this to the clipboard: sourcefile.cc:86:2)

这将是一个非常有用的调试工具。我如何实现这一目标？

编译错误示例：

Compiling test: "createClusterSizePairFrequencyValidationPlots"...
src/createClusterSizePairFrequencyValidationPlots.cc: In function 'int main(int, char**)':
src/createClusterSizePairFrequencyValidationPlots.cc:167:62: error: no matching function for call to 'TH2I::Fill(const int&, const float&, const char [2])'
 ngthYVsPhi_H  .Fill(cluster.sizeY,       phi, "1");
                                                  ^
In file included from /cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2D.h:25:0,
                 from src/../interface/ClusterPairFunctions.h:7,
                 from src/createClusterSizePairFrequencyValidationPlots.cc:8:
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:63:13: note: candidate: virtual Int_t TH2::Fill(Double_t)
    Int_t    Fill(Double_t); //MayNotUse
             ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:63:13: note:   candidate expects 1 argument, 3 provided
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:64:13: note: candidate: virtual Int_t TH2::Fill(const char*, Double_t)
    Int_t    Fill(const char*, Double_t) { return Fi
             ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:64:13: note:   candidate expects 2 arguments, 3 provided
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:75:21: note: candidate: virtual Int_t TH2::Fill(Double_t, Double_t)
    virtual Int_t    Fill(Double_t x, Double_t y);
                     ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:75:21: note:   candidate expects 2 arguments, 3 provided
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:76:21: note: candidate: virtual Int_t TH2::Fill(Double_t, Double_t, Double_t)
    virtual Int_t    Fill(Double_t x, Double_t y, Do
                     ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:76:21: note:   no known conversion for argument 3 from 'const char [2]' to 'Double_t {aka double}'
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:77:21: note: candidate: virtual Int_t TH2::Fill(Double_t, const char*, Double_t)
    virtual Int_t    Fill(Double_t x, const char *na
                     ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:77:21: note:   no known conversion for argument 2 from 'const float' to 'const char*'
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:78:21: note: candidate: virtual Int_t TH2::Fill(const char*, Double_t, Double_t)
    virtual Int_t    Fill(const char *namex, Double_
                     ^
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:78:21: note:   no known conversion for argument 3 from 'const char [2]' to 'Double_t {aka double}'
/cvmfs/cms.cern.ch/slc6_amd64_gcc530/cms/cmssw/CMSSW_8_0_18/external/slc6_amd64_gcc530/bin/../../../../../../lcg/root/6.06.00-ikhhed4/include/TH2.h:79:21: note: candidate: virtual Int_t TH2::Fill(const char*, const char*, Double_t)
    virtual Int_t    Fill(const char *namex, const c
                     ^
(lots of similar lines...)

应输出：

createClusterSizePairFrequencyValidationPlots.cc:167:62

更新到NIoSaT的答案：

要复制错误消息：

make 2>&1 | egrep -o ":[0-9]+:[0-9]+: error" | xargs echo -n | xclip -selection clipboard && xclip -selection clipboard -o && echo ""

复制并仅显示第一个错误：

make 2>&1 | egrep -o ":[0-9]+:[0-9]+: error" | head -n 1 | xargs echo -n | xclip -selection clipboard && xclip -selection clipboard -o && echo ""

Answer 1

要执行此操作，您可以使用grep。

命令就像这样

make 2>&1 | egrep ":[0-9]+:[0-9]+: error:"

这有两件事

将stderr移动到stdout
它查找：“任何数字在这里”：“任何数字”：错误：并打印出相应的行

因此，您应该只获得包含所需信息的行

更新答案：

复制错误消息：

make 2>&1 | egrep -o ":[0-9]+:[0-9]+: error" | xargs echo -n | xclip -selection clipboard && xclip -selection clipboard -o && echo ""

复制并仅显示第一个错误：

make 2>&1 | egrep -o ":[0-9]+:[0-9]+: error" | head -n 1 | xargs echo -n | xclip -selection clipboard && xclip -selection clipboard -o && echo ""

我可以以某种方式过滤GCC的错误消息行吗？

1 个答案: