I noticed this while doing a coverage enabled build. The libcpp Makefile doesn't enable the coverage options unlike the code in gcc/*
I think it also does not enable coverage for make profiled-bootstrap This likely gives some compiler performance away. -- Summary: libcpp Makefile does not enable instrumentation Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: preprocessor AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: andi-gcc at firstfloor dot org GCC host triplet: x86_64-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45227