Description of problem: When attempting to diagnose bug #1133860, I ended up with: Process record does not support instruction 0xc5 at address 0x3ba174add0. Version-Release number of selected component (if applicable): gdb-7.8-20.fc21.x86_64 gcc-4.9.1-7.fc21.x86_64 control-center-3.13.90-1.fc21.x86_64 How reproducible: 100% Steps to Reproduce: 1.debuginfo-install control-center 2.G_DEBUG=fatal_warnings gdb --args gnome-control-center online-accounts 3.tbreak main 4.run 5.record 6.continue Actual results: Continuing. Process record does not support instruction 0xc5 at address 0x3ba174add0. (null)Process record: failed to record execution log. [Thread 0x7fffefefda80 (LWP 1956)] #1 stopped. __memcpy_avx_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:126 126 vmovdqu (%rsi), %xmm0 I don't see this error on Fedora 20.
grep -q avx /proc/cpuinfo && echo -e '#include <string.h>\nint main(void) { static char a[0x20],b[0x20]; memcpy(a,b,16); return 0; }'|gcc -Wall -g -x c - && gdb -batch ./a.out -ex start -ex record -ex c Process record does not support instruction 0xc5 at address 0x7ffff7b5cdd0. __memcpy_avx_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:126 126 vmovdqu (%rsi), %xmm0
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*** Bug 1483950 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 1450992 ***