Almost all C++ sources with --enable-checking=valgrind yield valgrind errors, simple testcase is: extern "C" void abort (); This regression was caused by PR28274 http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145042 change - when t != x, x has been already ggc_freed, so dereferencing it is invalid.
-- Summary: [4.4/4.5 Regression] --enable-checking=valgrind C++ failures Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: jakub at gcc dot gnu dot org ReportedBy: jakub at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43033