AddressSanitizer: FPE on unknown address 0x000000773e98

[eternalsakura]

Build environment

• operating system: ubuntu20.04
• compile command:

  cd /pathto/moddable/xs/makefiles/lin
  make

• test command:

  ./xst poc

  poc

  var stdlib = {};
  var foreign = {};
  var heap = new ArrayBuffer(64 * 1024);
  var mod = function Module(stdlib, foreign, heap) {
  'use asm';
  function mod(dividend, divisor) {
      dividend = dividend | 0;
      divisor = divisor | 0;
      return (dividend | 0) % (divisor | 0) | 0;
  }
  return {
      mod: mod
  };
  }(stdlib, foreign, heap).mod;
  var divisors = [
  -2147483648,
  -32 * 1024,
  -1000,
  -16,
  -7,
  -2,
  -1,
  0,
  1,
  3,
  4,
  10,
  64,
  100,
  1024,
  2147483647
  ];
  for (var i in divisors) {
  var divisor = divisors[i];
  for (var dividend = -2147483648; dividend < 2147483648; dividend += 3999773) {
      print(dividend % divisor | 0, mod(dividend, divisor));
  }
  }

description

AddressSanitizer:DEADLYSIGNAL
=================================================================
==1941769==ERROR: AddressSanitizer: FPE on unknown address 0x000000773e98 (pc 0x000000773e98 bp 0x7ffd3c245b70 sp 0x7ffd3c245440 T0)
    #0 0x773e98 in fxRunID /home/sakura/moddable/xs/sources/xsRun.c:3395:27
    #1 0x78f93f in fxRunScript /home/sakura/moddable/xs/sources/xsRun.c:4752:4
    #2 0x909474 in fxRunProgramFile /home/sakura/moddable/xs/tools/xst.c:1387:2
    #3 0x909474 in main /home/sakura/moddable/xs/tools/xst.c:281:8
    #4 0x7f83acdd00b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #5 0x42e69d in _start (/home/sakura/moddable/build/bin/lin/release/xst+0x42e69d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: FPE /home/sakura/moddable/xs/sources/xsRun.c:3395:27 in fxRunID
==1941769==ABORTING

[phoddie]

Nice find -- thank you!

The simplest way to reproduce this issue appears to be:

let t = (-2147483648 | 0) % -1;

This is a variation of a similar issue fixed a few days ago.