Issue 6294043: Fixes a bug caused by a reallocation on vector.

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Issue 6294043: Fixes a bug caused by a reallocation on vector. (Closed)

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Created:
13 years ago by hsumita1

Modified:
13 years ago

Reviewers:
shawn.p.huang, Peng Huang, penghuang, Peng

Base URL:
git://github.com/ibus/ibus-pinyin.git@master

Visibility:
Public.

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Description

Fixes a bug caused by a reallocation on vector. BUG=Database::query crashes on some situation TEST=Manual

Patch Set 1 #

Patch Set 2 : Add comments. #

Created: 13 years ago

Download [raw] [tar.bz2]

		Unified diffs	Side-by-side diffs	Delta from patch set	Stats (+7 lines, -1 line)			Patch
	M	src/PYDatabase.cc	View	1	2 chunks	+7 lines, -1 line	0 comments	Download

Messages

Total messages: 5

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Peng

lgtm. But don't understand why origin code has problem. Please explain it. Thanks.

13 years ago (2012-06-05 14:09:32 UTC) #2

Peng

On 2012/06/05 14:09:32, Peng wrote: > lgtm. But don't understand why origin code has problem. ...

13 years ago (2012-06-05 14:15:15 UTC) #3

hsumita1

Please see also http://cplusplus.com/reference/stl/vector/push_back/ > This effectively increases the vector size by one, which causes ...

13 years ago (2012-06-06 05:04:04 UTC) #4

Peng

13 years ago (2012-06-06 14:18:58 UTC) #5

On 2012/06/06 05:04:04, hsumita1 wrote:
> Please see also
> 
> http://cplusplus.com/reference/stl/vector/push_back/
> > This effectively increases the vector size by one, which causes a
reallocation
> of the internal allocated
> > storage if the vector size was equal to the vector capacity before the call.
> Reallocations invalidate all
> > previously obtained iterators, references and pointers.
> 
> By this error, Database::query returns NULL pointer, and ibus-pinyin crashes
on
> g_assert on Query::fill.

I see. Thank you.

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