1 files changed, 142 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/auto-regress/bug739402.js b/js/src/jit-test/tests/auto-regress/bug739402.js
new file mode 100644
index 0000000000..d42de4e410
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/bug739402.js
@@ -0,0 +1,142 @@
+// |jit-test| slow;
+
+// Binary: cache/js-dbg-32-be41973873db-linux
+// Flags: --ion-eager
+//
+function MersenneTwister19937() {
+  N = 624;
+  var M = 397;
+  MATRIX_A = 567483615;
+  UPPER_MASK = 2147483648;
+  var LOWER_MASK = 767;
+  mt = Array();
+  function unsigned32(n1) {
+    return n1 < 0 ? (n1 ^ UPPER_MASK) + UPPER_MASK : n1;
+  }
+  function addition32(n1, n2) {
+    return unsigned32(n1 + n2 & 4294967295);
+  }
+  function multiplication32(n1, n2) {
+    sum = 0;
+    for (i = 0; i < 32; ++i) {
+      if (n1 >> i & 1) {
+        sum = addition32(sum, unsigned32(n2 << i));
+      }
+    }
+    return sum;
+  }
+  this.init_genrand = function() {
+    for (mti = 1; mti < N; mti++) {
+      mt[mti] = addition32(multiplication32(181433253, unsigned32(mt[mti - 1] ^ mt[mti - 1] >>> 30)), mti);
+    }
+  };
+  this.genrand_int32 = function() {
+    mag01 = Array(0, MATRIX_A);
+    if (mti > N) {
+      for (kk = 0; kk < N - M; kk++) {
+        y = unsigned32(mt[kk] & UPPER_MASK | mt[kk + 1] & LOWER_MASK);
+      }
+      for (; kk < N; kk++) {
+        mt[kk] = unsigned32(mt[kk + (M - N)] ^ y >>> 1 ^ mag01[y & 1]);
+      }
+      mti = 0;
+    }
+    y = mt[mti++];
+    return y;
+  };
+}
+(function() {
+  var fuzzMT = new MersenneTwister19937;
+  fuzzSeed = 4;
+  fuzzMT.init_genrand(fuzzSeed);
+  rnd = function(n) {
+    var x = fuzzMT.genrand_int32() * 2.2e-10;
+    return Math.floor(x * n);
+  };
+}());
+
+function rndElt(a) {
+  return a[rnd(a.length)];
+}
+varBinderFor = ["", "t", ""];
+function forLoopHead(d, b, v, reps) {
+  var sInit = rndElt(varBinderFor) + v + "=0";
+  var sCond = v + "<" + reps;
+  sNext = "++" + v;
+  return "for(" + sInit + ";" + sCond + ";" + sNext + ")";
+}
+function makeBranchUnstableLoop(d, b) {
+  var reps = rnd(rnd(9));
+  v = uniqueVarName();
+  var mod = rnd();
+  target = rnd(mod);
+  return "" + forLoopHead(d, b, v, reps) + "{" + "if(" + v + "%" + mod + "==" + target + "){" + makeStatement(d - 2, b) + "}" + "{" + makeStatement(d - 2) + "}" + "}";
+}
+function weighted(wa) {
+  a = [];
+  for (var i = 0; i < wa.length; ++i) {
+    for (var j = 0; j < wa[i].w; ++j) {
+      a.push(wa[i].fun);
+    }
+  }
+  return a;
+}
+statementMakers = weighted([{
+  w: 6,
+  fun: makeBranchUnstableLoop
+}, {}]);
+(function() {
+  builderStatementMakers = weighted([{
+    w: 1,
+    fun: function() {
+      return "gc()";
+    }
+  }, {
+    w: 10,
+    fun: function() {}
+  }]);
+  makeBuilderStatement = function() {
+    return rndElt(builderStatementMakers)();
+  };
+}());
+function uniqueVarName() {
+  for (i = 0; i < 6; ++i) {
+    s = String.fromCharCode(97 + rnd(6));
+  }
+  return s;
+}
+function makeLittleStatement(d) {
+  rnd(0);
+  if (rnd) {
+    rndElt(littleStatementMakers)();
+  }
+}
+littleStatementMakers = [function() {}];
+function testOne() {
+  var code = makeOv(10);
+  tryItOut(code);
+}
+function makeStatement(d, b) {
+  if (rnd(0)) {}
+  if (rnd(2)) {
+    return makeBuilderStatement();
+  }
+  d < 6 && rnd() == 0;
+  if (d < rnd(8)) {
+    return makeLittleStatement();
+  }
+  return rndElt(statementMakers)(d, b);
+}
+function makeOv(d, B) {
+  if (rnd() == 0) {}
+  return "" + makeStatement(d, [""]);
+}
+function tryItOut(code) {
+  try {
+    f = Function(code);
+    f();
+  } catch (r) {}
+}
+for (let aa = 0; aa < 9999; aa++) {
+  testOne();
+}