Very Computer

hi all,

I'm wondering if there is a tool for linux to do code coverage? means
list all code in a programm which is not hit by tests.

Thanks a lot in advance
best regards
Christian

I'm not sure, but I think that gprof does something like that. It's a part
of the GNU binutils package (at least it's in the binutils RPM in Mandrake
8.0).

--ll

gcov, which is documented in the gcc info pages.

--
Paul Kimoto
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gcc can do this, together with gcov.

However, it (and gprof and friends) appear to fail entirely with
shared libraries, which I find very annoying.

Anyone know why I shouldn't be able to build a set of shared libraries
and an executable using those with the appropriate flags, and then use
gprof (or gcov) and get useful information about what happened in the
shared libraries?

because the shared libs(and the source files that make it) have to be
compile w/ the -pg flag

--
2 dots does not a net make

No, it's because glibc just doesn't support it.   Whether or not
the libraries are also compiled -pg is moot.  The reason
is that the statistics gathering code in glibc will not record any
sample who's program counter value does not fall within the text section
of the main program.  Fixing this would require changes to glibc to
accomodate multiple, non-contiguous, dynamic sampling regions,
and to the dynamic loader so that when a new library is loaded, glibc's
monitor functions are made aware of the new range of possible PC values
so that buckets could be created for them.

Or use something like oprofile:
http://oprofile.sourceforge.net/

which doesn't even require that you compile your programs in a special
way in order to get simple PC-sample-based profiling.

Ken

Thanks a lot for all answers! I'll try that gcov/gprof stuff right now
:-)

best regards
Christian