341447 - Opening Firefox with about:blank and closing leaks memory

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Michael Wu [:mwu]]

To reproduce:

1. Close Firefox if opened.
2. Open about:blank in Firefox, either through homepage setting or commandline (eg. ./firefox about:blank)
3. Close Firefox

With a debug build on either trunk or branch, we leak quite a lot:

nsStringStats
 => mAllocCount:          14774
 => mReallocCount:         3247
 => mFreeCount:           12211  --  LEAKED 2563 !!!
 => mShareCount:          14365
 => mAdoptCount:           1781
 => mAdoptFreeCount:       1744  --  LEAKED 37 !!!

leak-gauge.pl says:

Summary:
Leaked 6 out of 6 DOM Windows
Leaked 28 out of 32 documents
Leaked 0 out of 3 docshells

This bug goes away if the user just browses away from about:blank, so it isn't a very big deal, but it is rather odd..

Comment 1

[:Gavin Sharp [email: [e-mail]]]

I wonder if my patch in bug 338360 "fixes" this... it removes an "optimization" that makes about:blank startups not load everything immediately.

Comment 2

[Cees T.]

Bug 39238?

Comment 3

[Adam Guthrie]

This works for me in a build with the latest patch from bug 383269. Michael, can you confirm?

Comment 4

[Michael Wu [:mwu]]

Looks okay on trunk now.