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yangguo@chromium.org 8fb95efdda Improve internal stringifcation for custom Error objects. 
If an developer attempts to "subclass" Error by running
`MyError.prototype = new Error();`, then the internal v8::Message object
that's produced and handed off to `window.onerror` handlers is poorly
stringified as "[object Object]".

This patch adjusts the stringification process for these objects to
include not only native Error objects, but also objects that have Error
in their prototype chain, and haven't overwritten Error.toString with
some custom variant.

BUG=2822
R=mstarzinger@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/21761002

Patch from Mike West <mkwst@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16075 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-08-06 13:58:21 +00:00
benchmarks More fixes for V8 benchmark version 7. 2012-03-15 17:13:50 +00:00
build Make optimized debug builds link against debug CRT. 2013-08-02 10:59:23 +00:00
include Return start/end profiling time in microseconds instead of milliseconds 2013-08-06 08:00:58 +00:00
preparser Factor out toolset definitions in a separate gypi file 2013-07-10 11:15:16 +00:00
samples Only depend on icudata on windows. 2013-07-11 11:01:00 +00:00
src Improve internal stringifcation for custom Error objects. 2013-08-06 13:58:21 +00:00
test Improve internal stringifcation for custom Error objects. 2013-08-06 13:58:21 +00:00
tools Un-revert "Implement simple effect typing for variables" and "Handle switch effects" 2013-08-06 12:57:23 +00:00
.gitignore Add "benchmarks" test suite 2013-08-05 14:54:09 +00:00
AUTHORS Fix a crash when generating forward jumps to labels at very high assembly offsets 2013-08-01 08:13:08 +00:00
ChangeLog Prepare push to trunk. Now working on version 3.20.14. 2013-08-06 07:31:23 +00:00
DEPS Update V8's dependencies: 2013-07-31 13:41:12 +00:00
LICENSE Update LICENSE file 2012-01-03 16:38:42 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile Generate grokdump constants with 'make grokdump' now. 2013-08-02 09:02:02 +00:00
Makefile.android Enable building for android on x86_64 machines. 2013-07-17 08:37:48 +00:00
Makefile.nacl Fix gyp_v8 to work with use_system_icu=1 2013-07-15 15:41:21 +00:00
OWNERS Add myself to OWNERS. 2013-06-27 11:37:47 +00:00
PRESUBMIT.py Add gate keeper logic to presubmit commit check. 2013-07-31 09:16:31 +00:00