Lcov：无法收集分支机构覆盖率统计数据
我使用lcov在我的项目中创建覆盖信息。 但我只能获得线路覆盖和function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!
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man lcovrc ）或在运行lcov/genhtml时指定--rc lcov_branch_coverage=1来启用它。
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。
（ 作者错误地将上述答案添加到了问题中。 ）
上面给出的解决方案：
--rc lcov_branch_coverage=1
用于lcov和genhtml，为我工作。