Package: lcov Version: 1.9 Severity: normal Tags: patch upstream gcc 4.7 (at least, that version is the first time this is mentioned in the manual) changed the 'gcov' output format slightly to allow it to distinguish unexecuted lines which are "reachable ... only [by] exceptional paths such as C++ exception handlers." These are marked with "=====" instead of "#####". The attached patch makes lcov's geninfo treat these as zero-execution-count lines; without it, processing C++ with catch clauses you get a flood of
geninfo: Argument "=====" isn't numeric in numeric gt (>) at /usr/bin/geninfo line 1281. error messages, and unexecuted catch clauses are reported as not having any generated code at all (so your coverage is artificially high). I didn't bother checking for gcc 4.7 specifically in the parser; in fact, I made the pre-gcc-3.3 parser handle "======" too, because it's quite possible that this feature has always been there and just never got mentioned in the manual until 4.7. Note that I have already informed [email protected] about this bug. There does not appear to be an upstream bug tracker that I can find. -- System Information: Debian Release: 7.0 APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages lcov depends on: ii gcc 4:4.7.2-1 ii perl 5.14.2-17 Versions of packages lcov recommends: ii libgd-gd2-perl 1:2.46-3+b1 lcov suggests no packages. -- no debconf information
Description: Handle "=====" as another form of zero. gcov prints "=====" instead of "######" when an unexecuted line is "reachable only by exceptional paths such as C++ exception handlers." This should be handled the same as "######" for our purposes. Author: Zack Weinberg <[email protected]> Last-Update: 2013-02-01 --- lcov-1.10.orig/bin/geninfo +++ lcov-1.10/bin/geninfo @@ -1742,8 +1742,9 @@ sub read_gcov_file($) $number = (split(" ",substr($_, 0, 16)))[0]; # Check for zero count which is indicated - # by ###### - if ($number eq "######") { $number = 0; } + # by ###### or ====== + if ($number eq "######" or + $number eq "======") { $number = 0; } if ($exclude_line) { # Register uninstrumented line instead @@ -1833,7 +1834,8 @@ sub read_gcov_file($) push(@result, 0); } else { # Check for zero count - if ($count eq "#####") { + if ($count eq "#####" || + $count eq "=====") { $count = 0; } push(@result, 1);
