clang的scan-build不适用于简单的cpp文件 [英] clang's scan-build doesn't work for simple cpp file

问题描述

我不能得到clang的 c ++ - analyzer 来处理玩具C ++文件。

I can't get clang's c++-analyzer to work on a toy C++ file.

#include <iostream>

using namespace std;

int main()
{
    int t[4];
    int x,y;

    t[5]=1;
    if(x)
        y = 5;
    x = t[y];
}         

makefile只是

makefile is just

all: t.cpp
    $(CXX) t.cpp

b $ b

scan-build make 输出：

scan-build: 'clang' executable not found in '/usr/share/clang/scan-build/bin'.
scan-build: Using 'clang' from path: /usr/bin/clang
/usr/share/clang/scan-build/c++-analyzer t.cpp
scan-build: Removing directory '/tmp/scan-build-2012-06-14-6' because it contains no reports.

如何使c ++ - 分析器工作？ Clang的版本是2.9在Ubuntu 11.10。

How to make c++-analyzer work? Clang's version is 2.9 on Ubuntu 11.10.

编辑：我知道代码不正确。关键是，Clang不抱怨明显的bug。如果我将上述代码粘贴到.c文件（没有 using ... ），clang会正确地发出警告。

I'm aware the code is incorrect. The point is that Clang does not complain about the obvious bugs. If I paste the above code to a .c file (without the using ...) clang correctly emits warnings.

推荐答案

原因如下：

http://lists.cs.uiuc.edu/pipermail/cfe-dev/2010-September/011194.html

>>> When I run "clang --analyze" on my c++ source files individually I get reports,
>>> but none when using the scan-build tool.
>> 
>> This is intended behavior.  C++ support is still alpha and so it isn't enabled
>> by default in scan-build.  It's really only intended to be used by those
>> currently hacking on the analyzer.
>> 
>> If you want to enable C++ analysis, you must define the environment variable
>> CCC_ANALYZER_CPLUSPLUS.

这篇关于clang的scan-build不适用于简单的cpp文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！