I work on a small c++ project named yans (http://yans.inria.fr). Whenever I try to perform a profile-directed optimized build, I get the following errors with the FC5-provided compiler:
src/ipv4/ipv4-end-point.cc: In function void<unnamed>::invoke_now(yans::Callback<void, yans::Ipv4EndPoint*, yans::empty, yans::empty, yans::empty>, yans::Ipv4EndPoint*): src/ipv4/ipv4-end-point.cc:92: error: coverage mismatch for function _ZN55_GLOBAL__N_src_ipv4_ipv4_end_point.cc_00000000_D34075F610invoke_nowEN4yans8CallbackIvPNS0_12Ipv4EndPointENS0_5emptyES4_S4_EES3_ while reading counter arcs src/ipv4/ipv4-end-point.cc:92: error: checksum is 1b860dda instead of 69a79691 This obviously happens during the profile-directed optimized rebuild following a single run of my benchmarking application. To reproduce: 1) download the code hg clone http://yans.inria.fr/code/yans yans-buggy cd yans-buggy hg revert -r a0534ece96ea 2) build the code make opti-arc This code relies on gnu make 0.80 at least and mercurial (to download the right version of the code) 0.8.x. I have no idea on how I could reduce this test case. -- Summary: error: coverage mismatch Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: gcov/profile AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mathieu dot lacage at sophia dot inria dot fr GCC host triplet: i386-redhat-linux GCC target triplet: i386-redhat-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27738
