[d8] Make exception reporting more resilient.

[d8] Make exception reporting more resilient.

This makes sure exception reporting done by the debug shell behaves
gracefully even near the stack limit. When line number determination
fails we just fallback to not printing source information.

R=yangguo@chromium.org
TEST=mjsunit/regress/regress-crbug-620253
BUG=chromium:620253
Committed: https://crrev.com/e55384b28e2354b384dbbe3821af10065566231a
Cr-Commit-Position: refs/heads/master@{#37031}

[Yang, 2016-06-16 09:49:29]

On 2016/06/16 09:45:50, Michael Starzinger wrote:

lgtm

[Michael Starzinger, 2016-06-16 09:50:57]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-06-16 09:51:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2069543007/1

[commit-bot: I haz the power, 2016-06-16 10:12:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-16 10:14:17]

Description was changed from

==========
[d8] Make exception reporting more resilient.

This makes sure exception reporting done by the debug shell behaves
gracefully even near the stack limit. When line number determination
fails we just fallback to not printing source information.

R=yangguo@chromium.org
TEST=mjsunit/regress/regress-crbug-620253
BUG=chromium:620253
==========

to

==========
[d8] Make exception reporting more resilient.

This makes sure exception reporting done by the debug shell behaves
gracefully even near the stack limit. When line number determination
fails we just fallback to not printing source information.

R=yangguo@chromium.org
TEST=mjsunit/regress/regress-crbug-620253
BUG=chromium:620253

Committed: https://crrev.com/e55384b28e2354b384dbbe3821af10065566231a
Cr-Commit-Position: refs/heads/master@{#37031}
==========

[commit-bot: I haz the power, 2016-06-16 10:14:17]

Patchset 1 (id:??) landed as
https://crrev.com/e55384b28e2354b384dbbe3821af10065566231a
Cr-Commit-Position: refs/heads/master@{#37031}