--undef-value-errors is not a massif option, it is a memcheck option. So, it is completely normal that massif reports that this is an unknown option.
If you want to have the list of options massif understands, you have to do: valgrind --tool=massif --help If you do not specify a tool, then valgrind defaults to memcheck. Note that you can also prefix options with the tool they are aimed at. So, e.g. valgrind --tool=massif --memcheck:undef-value-errors=no executable does not complain. Philippe On Sat, 2019-02-16 at 15:20 +0200, / via Valgrind-users wrote: > Hi people, I get the following error when I try to invoke "massif" in > the most simple manner: > > valgrind: Unknown option: --undef-value-errors=no > valgrind: Use --help for more information or consult the user manual. > > Command to reproduce the error: > > valgrind --verbose --tool=massif executable > > where executable was the program i wanted to check (compiled with -g) > > even a simple > > valgrind --verbose --tool=massif /bin/bash > > produces the same error > > ** Valgrind version: > valgrind-3.14.0 > > Fedora, linux 4.18.19-100 > > Many thanks, > a. > > > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
