Iterate through all arguments for side effects in Math.min/max.

test/mjsunit/regress/regress-2444.js

+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+var flags;
+
+function resetFlags(size) {
+  flags = Array(size);
+  while (size--) flags[size] = 0;
+}
+
+function assertFlags(array) {
+  assertArrayEquals(array, flags);
+}
+
+function object_factory(flag_index, value, expected_flags) {
+  var obj = {};
+  obj.valueOf = function() {
+    assertFlags(expected_flags);
+    flags[flag_index]++;
+    return value;
+  }
+  return obj;
+}
+
+
+assertEquals(-Infinity, Math.max());
+
+resetFlags(1);
+assertEquals(NaN,
+             Math.max(object_factory(0, NaN, [0])));
+assertFlags([1]);
+
+resetFlags(2);
+assertEquals(NaN,
+             Math.max(object_factory(0, NaN, [0, 0]),
+                      object_factory(1,   0, [1, 0])));
+assertFlags([1, 1]);
+
+resetFlags(3);
+assertEquals(NaN,
+             Math.max(object_factory(0, NaN, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2,   1, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+resetFlags(3);
+assertEquals(NaN,
+             Math.max(object_factory(0,   2, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2, NaN, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+resetFlags(3);
+assertEquals(2,
+             Math.max(object_factory(0,   2, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2,   1, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+
+assertEquals(+Infinity, Math.min());
+
+resetFlags(1);
+assertEquals(NaN,
+             Math.min(object_factory(0, NaN, [0])));
+assertFlags([1]);
+
+resetFlags(2);
+assertEquals(NaN,
+             Math.min(object_factory(0, NaN, [0, 0]),
+                      object_factory(1,   0, [1, 0])));
+assertFlags([1, 1]);
+
+resetFlags(3);
+assertEquals(NaN,
+             Math.min(object_factory(0, NaN, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2,   1, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+resetFlags(3);
+assertEquals(NaN,
+             Math.min(object_factory(0,   2, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2, NaN, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+resetFlags(3);
+assertEquals(0,
+             Math.min(object_factory(0,   2, [0, 0, 0]),
+                      object_factory(1,   0, [1, 0, 0]),
+                      object_factory(2,   1, [1, 1, 0])));
+assertFlags([1, 1, 1]);
+
+