I’m trying to get a look at my programs memory usage using valgrind’s ‘massif’ tool. I built my program in ReleaseFast mode.
$ valgrind --tool=massif ./zig-out/bin/trie
==25613== Massif, a heap profiler
==25613== Copyright (C) 2003-2024, and GNU GPL'd, by Nicholas Nethercote et al.
==25613== Using Valgrind-3.24.0 and LibVEX; rerun with -h for copyright info
==25613== Command: ./zig-out/bin/trie
==25613==
vex amd64->IR: unhandled instruction bytes: 0x62 0xF2 0x7D 0x28 0x7A 0xC6 0x4E 0x8D 0x4 0x8
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
==25613== valgrind: Unrecognised instruction at address 0x1036f71.
==25613== at 0x1036F71: memset (memset.zig:21)
==25613== by 0x100A5B5: prepareArea (tls.zig:462)
==25613== by 0x100A5B5: initStatic (tls.zig:528)
==25613== by 0x100A5B5: start.posixCallMainAndExit (start.zig:547)
==25613== by 0x100A20D: (below main) (start.zig:271)
==25613== Your program just tried to execute an instruction that Valgrind
==25613== did not recognise. There are two possible reasons for this.
==25613== 1. Your program has a bug and erroneously jumped to a non-code
==25613== location. If you are running Memcheck and you just saw a
==25613== warning about a bad jump, it's probably your program's fault.
==25613== 2. The instruction is legitimate but Valgrind doesn't handle it,
==25613== i.e. it's Valgrind's fault. If you think this is the case or
==25613== you are not sure, please let us know and we'll try to fix it.
==25613== Either way, Valgrind will now raise a SIGILL signal which will
==25613== probably kill your program.
==25613==
==25613== Process terminating with default action of signal 4 (SIGILL): dumping core
==25613== Illegal opcode at address 0x1036F71
==25613== at 0x1036F71: memset (memset.zig:21)
==25613== by 0x100A5B5: prepareArea (tls.zig:462)
==25613== by 0x100A5B5: initStatic (tls.zig:528)
==25613== by 0x100A5B5: start.posixCallMainAndExit (start.zig:547)
==25613== by 0x100A20D: (below main) (start.zig:271)
==25613==
Illegal instruction (core dumped)
Can anyone tell why this is happening and/or how to get it working?
