[Patch] timezone/zic.c: Fix file handle leak in dolink()

Started by zengman4 months ago5 messageshackers
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#1zengman
zengman@halodbtech.com

Hi all,

I noticed a small issue and made a tiny patch to fix it — it addresses a file handle leak in the dolink() function of src/timezone/zic.c.

--
Regards,
Man Zeng
www.openhalo.org

Attachments:

zic_file_leak_fix.diffapplication/octet-stream; charset=gb18030; name=zic_file_leak_fix.diffDownload+1-0
#2zengman
zengman@halodbtech.com
In reply to: zengman (#1)
Re: [Patch] timezone/zic.c: Fix file handle leak in dolink()

Furthermore, I noticed that some of the test code in `contrib/pg_trgm/trgm_regexp.c` does not check the return value of the `fopen()` call.
I'm not sure if it's necessary to make the modification.

--
Regards,
Man Zeng
www.openhalo.org

Attachments:

pg_trgm-add-fopen-null-check.diffapplication/octet-stream; charset=ISO-8859-1; name=pg_trgm-add-fopen-null-check.diffDownload+6-0
#3Tom Lane
tgl@sss.pgh.pa.us
In reply to: zengman (#1)
Re: [Patch] timezone/zic.c: Fix file handle leak in dolink()

"=?gb18030?B?emVuZ21hbg==?=" <zengman@halodbtech.com> writes:

I noticed a small issue and made a tiny patch to fix it ¡ª it addresses a file handle leak in the dolink() function of src/timezone/zic.c.

Huh? The program is going to exit() two lines further down.
What's the point of closing here?

Even if there were a plausible argument for issuing close(),
I wouldn't care to diverge from upstream zic. If you like
you can go try to persuade the tzdb crew that this is a
useful change.

regards, tom lane

#4Tom Lane
tgl@sss.pgh.pa.us
In reply to: zengman (#2)
Re: [Patch] timezone/zic.c: Fix file handle leak in dolink()

"=?ISO-8859-1?B?emVuZ21hbg==?=" <zengman@halodbtech.com> writes:

Furthermore, I noticed that some of the test code in `contrib/pg_trgm/trgm_regexp.c` does not check the return value of the `fopen()` call.
I'm not sure if it's necessary to make the modification.

Probably not worth the trouble. This is barely even debug-grade
code, seeing that there's no provision to change the target file
name. It's clearly not meant for use in unfriendly environments.

regards, tom lane

#5zengman
zengman@halodbtech.com
In reply to: Tom Lane (#4)
Re: [Patch] timezone/zic.c: Fix file handle leak in dolink()

Got it, thank you for your guidance.

--
Regards,
Man Zeng
www.openhalo.org