On 26/05/2020 09:06, Patrick Bégou wrote:
valgrind-3.16.0.RC2 doesn't work for me (as previous version on this
server).
Are you saying that it fails on a binary that worked before?
vex amd64->IR: unhandled instruction bytes: 0x62 0xF1 0xFD 0x8 0x6F 0x5
0x25 0xA8 0x18 0x0
vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0
vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=NONE
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0
==306850== valgrind: Unrecognised instruction at address 0x6ddf581.
vex amd64->IR: unhandled instruction bytes: 0x62 0xF1 0xFD 0x8 0x6F 0x5
0x25 0xA8 0x18 0x0
vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0
vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=NONE
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0
Because this is an instruction with an EVEX prefix that is not
supported by any version of valgrind ever so I don't see how this
binary can have worked with the previous version of valgrind.
I suspect that you have in fact recompiled the program with
a different compiler or different optimization settings since
the time when it worked?
Tom
--
Tom Hughes (t...@compton.nu)
http://compton.nu/
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