Lcov:无法收集分支机构覆盖统计数据

Question

我用它lcov在我的项目中创建覆盖信息.但我只能得到线路覆盖和功能覆盖统计信息.

lcov version:1.10, gcov version:4.4.5

我使用的命令是:

 lcov -d $OSPL_HOME/src -d $OSPL_OUTER_HOME/src  -c -o /work/li/log/lcov-raw.info

lcov -r /work/li/log/lcov-raw.info "*.ll" "*.yy" "*.yy.c" yaccpar "TAO161*" "/usr/include/*"  "*/testsuite/*" -o /work/li/log/lcov.info

在这两个命令之后,我得到的结果是:

Deleted 23 files

Writing data to /work/li/log/lcov.info

Summary coverage rate:

  lines......: 45.4% (65087 of 143496 lines)

   functions..: 46.1% (5575 of 12102 functions)

  **branches...: no data found**

所以没有分支覆盖结果.为什么？所以发生了什么事？这怎么可能发生？我在这里很困惑.

在第一个命令之后,我收到了很多这样的警告:

geninfo: WARNING: cannot find an entry for ..#..#code#accum.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#at.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#autodef.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#copyof.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#debug.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#define.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#dump.c.gcov in .gcno file,skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#error.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#expand.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#expr.c.gcov in .gcno file,skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#if.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#include.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#io.c.gcov in .gcno file, s kipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#is.c.gcov in .gcno file, s kipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#line.c.gcov in .gcno file,skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#pragma.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#preprocess.c.gcov in .gcnofile, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#set.c.gcov in .gcno file,skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#sharp.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#symtbl.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#undef.c.gcov in .gcno file, skipping file!
 geninfo: WARNING: cannot find an entry for ..#..#code#while.c.gcov in .gcno file , skipping file!

Answer 1

我收到了geninfo的作者Peter Oberparleiter的电子邮件.我得到了如下答案.

LCOV 1.10默认禁用分支覆盖.您可以通过修改lcovrc文件(请参阅参考资料man lcovrc)或指定--rc lcov_branch_coverage=1何时运行来启用它lcov/genhtml.

如果您没有使用LCOV 1.10但仍未获得分支机构覆盖,则可能是您的GCC版本未提供此信息.

(以上回答被错误添加到由问题的作者.)

Answer 2

上面给出的解决方案:

--rc lcov_branch_coverage=1

用于lcov和genhtml,为我工作.