"Hello world" example fails with error: "HVM output had no result (An error likely occurred)"

[jaredkrinke]

Reproducing the behavior

hello.bend (copied from GUIDE.md):

def main():
  return "Hello, world!"

Command: bend run hello.bend -s

Expected: Prints "Hello, world!". Actual: "HVM output had no result (An error likely occurred)" (same for run, run-c)

System Settings

• HVM: 2.0.22
• Bend: 0.2.37
• OS: Linux (Debian stable/bookworm) -- N.B. this is a VM
• CPU: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
• GPU: none
• Cuda Version: none

Additional context

I'm brand new to Bend, so it's possible I'm doing something wrong. I didn't see any similar-looking bug reports, or anything in the FAQ. I tried running with -v, but I didn't see any obvious errors getting logged (just lots of transpiled code?).

[jaredkrinke]

I found a thread on Discord where someone ran into a similar problem, and they were able to resolve it by increasing the amount of memory available to their VM. I tried increasing the VM's memory to 4 GB, to no avail, but increasing the VM's memory to 8 GB got things working.

Is it expected to have a "hello world" require gigabytes of memory?

[jaredkrinke]

I found an HVM bug that makes it sound like this is known: https://github.com/HigherOrderCO/HVM/issues/332

Feel free to close this bug if that's correct.

[jaredkrinke]

Well, the "hello world" program runs on my 4 GB laptop, so maybe this is something specific to VMs (I was using Hyper-V), or possibly Debian stable (my laptop is running something newer).

Regardless, I have a working setup now.

[developedby]

HVM currently always preallocates about 6GB of memory, so that's likely what's causing your issue.