Wrong result from const-evaluated 32-bit `-` `~`

[fuhsnn]

#include <stdio.h>
long neg = -1U;
long not = ~1U;
int main(void) {
    printf("%ld\n", neg); // expected 4294967295, got -1
    printf("%ld\n", not); // expected 4294967294, got -2
}