+--- firefox-68.7.0/js/src/vm/BigIntType.cpp~ 2020-04-03 21:29:59.000000000 +0200
++++ firefox-68.7.0/js/src/vm/BigIntType.cpp 2020-05-01 11:22:53.296439915 +0200
+@@ -263,7 +263,7 @@
+ BigInt::Digit BigInt::digitDiv(Digit high, Digit low, Digit divisor,
+ Digit* remainder) {
+ MOZ_ASSERT(high < divisor, "division must not overflow");
+-#if defined(__x86_64__)
++#if defined(__x86_64__) && !defined(__ILP32__)
+ Digit quotient;
+ Digit rem;
+ __asm__("divq %[divisor]"