Default severity: warning
The compiler can perform items[string(bytes)] without copying the byte slice
because the temporary string cannot escape the lookup. Assigning
string(bytes) to a variable first prevents that optimization and allocates
when the variable is used only as a map key.
The check stays silent when the string variable has any non-lookup use.
Bad
key := string(keyBytes); value := items[key]Good
value := items[string(keyBytes)]