84527 - history.go(-tooFar) disables session history

Status: VERIFIED DUPLICATE of bug 84519

(Core :: DOM: Navigation, defect, P3)

Description

[Jesse Ruderman]

Steps to reproduce:
1. Open a new window to your home page.
2. Click a link.
3. Type javascript:history.go(-2) into the location bar and hit enter.
4. Try to navigate using the back and forward buttons.

Results:
- Navigating session history using the back and forward buttons no longer works.
- javascript:history.go(-1) to go back one page no longer works.

Expected: history.go(-2) goes back two pages, or to the first page visited if
going back two pages would be too far.  (It should not throw an exception,
because then the page could figure out how long your session history list is
using try/catch in a loop.)

This bug can be triggered accidentally if a site has a "back" link that uses
history.go(-1) but the page was the first loaded in a window.

I'm marking this bug as major because it allows a page to cripple a browser
window and possibly cause data loss.

See also bug 84519, after doing history.go(+tooFar), must press back button many
times to go back.

Comment 1

[Tom Mraz]

Not platform specific

Comment 2

[Blake Ross]

Missed the 0.9.3 train.  Since the back button not working (as in, disabled) was
a major pr1 complaint, though, I think we should seriously consider this for 0.9.4.

Comment 3

[Radha on family leave (not reading bugmail)]

The underlying problem is the same as in 84519

*** This bug has been marked as a duplicate of 84519 ***

Comment 4

[Tom Mraz]

VERIFIED based on comments.