smashing | The exceptionally handsome dashboard framework in Ruby and Coffeescript | Dashboard library

According to the documentation, the msgsz argument to msgrcv should indicate the size (in bytes) of the .mtext member of the message structure, rather than the size of the entire structure.

That structure will typically be 4 or 8 bytes (depending on how long int is defined) larger than the available buffer, so you are likely writing beyond the available/assigned memory – causing undefined behaviour.

One possible effect of that UB is corruption of the stack allocated for the main function; if that function never returns (as when you add the infinite loop), that stack corruption may not manifest itself.

Stack smashing is when you overwrite the special values (return address, previous ebp register value) on your function's stack frame.
This is is a common bug and is a security flaw. Most compilers now add a simple check in your function prologue and epilogue to check whether the values changed. This is the stack smashing error you are causing.
To prevent the copmiler from inserting the stack-smashing check, use the -fno-stack-protector compiler flag. (as @Grazosi suggested).
This will cause you program to use a (probably) invalid return address, and will cause a segmentation fault (invalid memory access)

When I understood your question right, this should help:

Add threshold variables and values using --argjson (preferred over --arg as we talk about numbers), then extract from the .audits object each item that smashes the corresponding threshold using select, format them in a way to carry the actual value and the threshold to be reused in the output, and finally convert those items into an alert string (which will be output as is due to the --raw-output parameter).

For starters this array

You can add data property muted, update property on

Well done Andrew. The problem is that you've fixed both the height and width for your image. You can try fixing one of them, not both. And also object-fit: cover; helps keeping the aspect ratio.

You need to wait for your asynchronous function to be resolved.

There are several errors in your code,

1. you should convert int to string using to_string()
2. you should iterate string using its size() ...