Clear exceptions set during attempts to lazily optimize.

test/mjsunit/regress/regress-1145.js

Index: test/mjsunit/regress/regress-1145.js
diff --git a/test/mjsunit/regress/regress-1145.js b/test/mjsunit/regress/regress-1145.js
new file mode 100644
index 0000000000000000000000000000000000000000..5267e90006480caeecc3bbf703678d59c280dda8
--- /dev/null
+++ b/test/mjsunit/regress/regress-1145.js
@@ -0,0 +1,54 @@
+// Copyright 2011 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: --opt-eagerly --debug-code
+
+// See: http://code.google.com/p/v8/issues/detail?id=1145
+// Should not throw a syntax error exception (change this if we make lazily.

[fschneider, 2011/02/25 11:15:50]

remove extra period at line-end.

+// compiled functions with syntax errors into early errors).
+// Should not hit an assertion in debug mode.
+
+// A lazily compiled function with a syntax error that is attempted inlined
+// would set a pending exception that is then ignored (until it triggers
+// an assert).
+// This file must be at least 1024 bytes long to trigger lazy compilation.
+
+function f() { return 1; }
+
+// Must be lazy. Must throw SyntaxError during compilation.
+function fail() { continue; }
+
+function opt_me() {
+  var x = 1;
+  // Do lots of function calls and hope to be optimized.
+  for (var i = 0; i < 1000000; i++) {
+    x = f();
+  }
+  if (x == 0) fail();  // Hope to be inlined during optimization.
+}
+
+opt_me();