gcov parsing errors in gcovr

[Martin Mrazik]

This is the output of make coverage-xml from compiz (but unity has the same issue too):

/usr/bin/cmake -P "/tmp/buildd/compiz-0.9.9~bzr3502pkg0quantal118/obj-i686-linux-gnu/coverage-xml.cmake"
(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.(WARNING) Unrecognized GCOV output: '====='
 This is indicitive of a gcov output parse error.
 Please report this to the gcovr developers.make[3]: Leaving directory `/tmp/buildd/compiz-0.9.9~bzr3502pkg0quantal118/obj-i686-linux-gnu'

[LeForgeron (jgrimbert)]

Happen to me also.
Seems due to using g++/gcc 4.7 (does not occurs with 4.6, which is currently the LTS version).
(I use gcovr on private sources (think "big hello world!"), it's unrelated to compiz)

lcov/geninfo has an easy patch (circa line 1640 : replace
      if ($count eq "#####")
with
      if ($count eq "#####" or $count eq "=====")

)

Something similar should be possible (probably arround line 395 of the gcovr script, on the 13 April 2012 release)

Technical details:
* system: Ubuntu 12.10, amd64,
* g++ 4.7.2,
* gcov 4.7.2

[Michi Henning (michihenning)]

Here are the diffs for geninfo and gcovr.

$ diff geninfo.orig geninfo
1836c1836,1837
< if ($count eq "#####") {
---
> if ($count eq "#####"
> or $count eq "=====") {

$ diff gcovr.orig gcovr
395c395
< if tmp[0] == '#':
---
> if tmp[0] == '#' or tmp[0] == '=':

[Markhor (markhor)]

So Michi Henning did fix this bug in April, will anybody apply his patch?

[James Henstridge (jamesh)]

It looks like gcovr was updated some time in the last few years to handle this output (probably version 3.0?).

The lcov package was patched in Debian package version 1.10-1 according to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699565

So this problem has been fixed for a number of Ubuntu releases now.