clang bad constant folding

gistfile1.c

#include <stdio.h>
#include <limits.h>

// gcc detects the weirdness, clang does not!
// Try different optimization levels, architectures and OSes for more fun.
int main() {
    // Unclobberred arguement
    printf("%x\n", INT_MIN / -1);

    // Unclobbered variable
    int x = INT_MIN / -1;
    printf("%x\n", x);

    // This shouldn't crash if the constant is "properly" folded, but will if it's not
    x = INT_MIN;
    printf("%x\n", x / -1);
    return 0;
}