Improve positions recording for calls.

test/mjsunit/regress/regress-conditional-position.js

+// Copyright 2010 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.
+
+// Flags: --always-full-compiler
+
+var functionToCatch;
+var lineNumber;
+
+function catchLineNumber () {
+  var x = {};
+
+  Error.prepareStackTrace = function (error, stackTrace) {
+    stackTrace.some(function (frame) {
+      if (frame.getFunction() == functionToCatch) {
+        lineNumber = frame.getLineNumber();
+        return true;
+      }
+      return false;
+    });
+    return lineNumber;
+  };
+
+  Error.captureStackTrace(x);
+  return x.stack;
+}
+
+function log() {
+  catchLineNumber();
+}
+
+function foo() {}
+
+function test1() {
+  log(foo() == foo()
+      ? 'a'
+      : 'b');
+}
+
+function test2() {
+  var o = { foo: function () {}}
+  log(o.foo() == o.foo()
+      ? 'a'
+      : 'b');
+}
+
+function test3() {
+  var o = { log: log, foo: function() { } };
+  o.log(o.foo() == o.foo()
+      ? 'a'
+      : 'b');
+
+}
+
+function test(f, expectedLineNumber) {
+  functionToCatch = f;
+  f();
+
+  assertEquals(expectedLineNumber, lineNumber);
+}
+
+test(test1, 58);
+test(test2, 65);
+test(test3, 72);
+
+eval(test1.toString() + "//@ sourceUrl=foo");
+eval(test2.toString() + "//@ sourceUrl=foo");
+eval(test3.toString() + "//@ sourceUrl=foo");
+
+test(test1, 2);
+test(test2, 3);
+test(test3, 3);