Version: unspecified OS: Linux I run valgrind on my program linked in Google's libprotobuf and it crashed: vex amd64->IR: unhandled instruction bytes: 0xC4 0xE1 0xFA 0x2A 0xC3 0xE8 0x16 0xFD ==23717== valgrind: Unrecognised instruction at address 0x64a1328. ==23717== at 0x64A1328: global constructors keyed to parser.cc (hashtable_policy.h:423) ==23717== by 0x64A27A5: ??? (in /usr/lib64/libprotobuf.so.6.0.0) ==23717== by 0x641D9E2: ??? (in /usr/lib64/libprotobuf.so.6.0.0) ==23717== Your program just tried to execute an instruction that Valgrind ==23717== did not recognise. I disasm code that cause problem: cc328: c4 e1 fa 2a c3 vcvtsi2ss %rbx,%xmm0,%xmm0 cc32d: e8 16 fd f7 ff callq 4c048 <ceilf@plt> cc332: c5 f8 2e 05 9a 2b 00 vucomiss 0x2b9a(%rip),%xmm0 Reproducible: Didn't try Steps to Reproduce: Run valgrind on program with linked libprotobuf, plus compile libprotobuf using gcc(4.5.3) with flags: -O2 -march=native on i7 CPU. Actual Results: crash Expected Results: not crahsed
*** This bug has been marked as a duplicate of bug 273475 ***