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我使用lcov在我的项目中创建覆盖率信息。但我只能得到线路覆盖和功能覆盖统计信息。Lcov：无法收集分支机构覆盖率统计信息
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
这两个命令后，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**
所以没有分支的覆盖效果。为什么？所以发生了什么事？这又如何发生？我很困惑。
第一个命令后，我得到了很多像这样的警告：
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!
请添加答案作为你自己的问题的答案。我发现它非常有帮助。 – nwellnhof
我在下面添加了社区wiki答案。如果作者回到这个问题，他/她可以添加自己的答案，并获得回报。 –
[为lcov生成分支覆盖数据]的可能重复（http://stackoverflow.com/questions/12360167/generating-branch-coverage-data-for-lcov） – Hcorg