Fix

"slice bounds out of range" in Go

Compiler Errors
2026-04-17T12:05:42+00:00
Fix Go slice bounds out of range panic by checking slice length before accessing indices.

The "slice bounds out of range" panic occurs when your code attempts to access an index that does not exist in the slice. Add a length check before accessing the element to prevent the panic.

if i < len(mySlice) {
    val := mySlice[i]
    // use val
} else {
    // handle missing index
}

Alternatively, use the slices package helper if you are on Go 1.21+ to safely get a value with a default:

import "slices"

val := slices.IndexFunc(mySlice, func(item Type) bool { return item == target })
if val != -1 {
    // found
}

Or simply ensure your loop bounds are correct:

for i := 0; i < len(mySlice); i++ {
    // safe access
}