扫描-构建不工作报告“正在删除目录xxx，因为它不包含报告。”
扫描-构建不工作报告“正在删除目录xxx，因为它不包含报告。”
提问于 2021-06-29 11:53:57
简单的错误代码文件
$ python --version
Python 3.8.5
$ gcc --version
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ clang --version
clang version 10.0.0-4ubuntu1
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ make --version
GNU Make 4.2.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.hello.c
int main() {
int x = 7 / 0; // bug here
return 0;
}与gcc一起运行命令和结果
$ scan-build -v gcc -o hello hello.c
scan-build: INFO: Report directory created: /tmp/scan-build-2021-06-29-03-50-40-733039-n821xtkx
hello.c: In function ‘main’:
hello.c:2:13: warning: division by zero [-Wdiv-by-zero]
2 | int x = 7 / 0; // Memory leak
| ^
scan-build: WARNING: Removing directory '/tmp/scan-build-2021-06-29-03-50-40-733039-n821xtkx' because it contains no report.使用clang
$ scan-build -v clang -o hello hello.c
scan-build: INFO: Report directory created: /tmp/scan-build-2021-06-29-03-51-08-738812-1059tk4t
hello.c:2:13: warning: division by zero is undefined [-Wdivision-by-zero]
int x = 7 / 0; // Memory leak
^ ~
1 warning generated.
scan-build: WARNING: Removing directory '/tmp/scan-build-2021-06-29-03-51-08-738812-1059tk4t' because it contains no report.我不能理解为什么警告是生成的(可能是由编译器生成的？)，但是为什么扫描构建不能工作呢？
*2021年6月30日更新
我按照这个教程，最终得到了"python“版本的扫描-构建，这是这样一个误解，答案完美地解决了我的问题，现在正在工作。https://github.com/rizsotto/scan-build
回答 1
Stack Overflow用户
回答已采纳
发布于 2021-06-29 12:58:17
不知何故，您调用的是scan-build-py而不是scan-build。
这是一个旨在分析python代码的脚本。
在我的Ubuntu20.04中，安装后(sudo apt install clang-tools)：
/usr/bin/scan-build -> scan-build-10*
/usr/bin/scan-build-10 -> ../share/clang/scan-build-10/bin/scan-build*
/usr/bin/scan-build-py-10 -> ../share/clang/scan-build-py-10/bin/scan-build*如果我使用/usr/bin/scan-build-py-10，我会得到和你一样的输出。
如果我使用/usr/bin/scan-build-10，我会在分析你的C程序时得到预期的输出。
$ scan-build-10 -v gcc -o hello hello.c
scan-build: Using '/usr/lib/llvm-10/bin/clang' for static analysis
scan-build: Emitting reports for this run to '/tmp/scan-build-2021-06-29-065953-647-1'.
hello.c: In function ‘main’:
hello.c:2:15: warning: division by zero [-Wdiv-by-zero]
2 | int x = 7 / 0; // bug here
| ^
hello.c:2:9: warning: Value stored to 'x' during its initialization is never read
int x = 7 / 0; // bug here
^ ~~~~~
hello.c:2:15: warning: Division by zero
int x = 7 / 0; // bug here
~~^~~
2 warnings generated.
scan-build: 2 bugs found.
scan-build: Run 'scan-view /tmp/scan-build-2021-06-29-065953-647-1' to examine bug reports.$ scan-view /tmp/scan-build-2021-06-29-065953-647-1
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/68172416
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