R Under development (unstable) (2024-06-07 r86704 ucrt) -- "Unsuffered Consequences"
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> 
> 
> haz <- c(0.2, 0.3, 0.5)
> haz
[1] 0.2 0.3 0.5
> haz_all <- sum(haz)
> #new code, produces correct outputs
> table(sample(1:3, size = 10^6, prob = haz / haz_all, replace = TRUE))/10^6

       1        2        3 
0.199788 0.300344 0.499868 
> #old code, probs. dont match hazards
> table(1L + stats::rbinom(n = 10^6, size = 2, prob = haz/haz_all))/10^6

       1        2        3 
0.459337 0.414133 0.126530 
> 
> proc.time()
   user  system elapsed 
   0.28    0.10    0.37