Invalid call in roots() command

[Skinsuit]

I'm getting an illegal instruction call when attempting to use roots() in ApproxFun, in both Julia 1.3.1 and 1.4.2.

Invalid instruction at 0x7f246ed51416: 0x66, 0x0f, 0x3a, 0x0f, 0xc9, 0x08, 0x48, 0x89, 0xc7, 0x48, 0xf7, 0xdf, 0x66, 0x41, 0x0f

A possible cause: I'm using an older processor, an AMD Phenom II, which apparently doesn't have SSSE3. I've used either the pre-built Julia 1.3.1 or a locally built Julia 1.4.2, per the below issue in the main Julia line, and have had success running just about anything else in Julia. Is there a call to this instruction set from within ApproxFun?

JuliaLang/julia#35215

It appears your machines are complaining at a palignr instruction. You can see in that linked webpage that the instruction is marked as "SSSE3", and that its opcode starts with 66 0F 3A 0F.

Luckily I have another computer with a more modern processor which runs roots() just fine.

Full text of dump attached.

ApproxFunErrorDump.txt

[dlfivefifty]

That looks like an error in FFTW.jl. I'd suggest trying to come up with a MWE and filing an issue with them.

[Skinsuit]

Copy, thanks!