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Commits from this thread:
2018-10-03 d173652797 Replace uint64 use introduced in 4868e446859 in light of 595a0eab7f42.
* pgsql: Ensure that snprintf.c's fmtint() doesn't overflow when printing
@ 2018-10-03 20:16 Andres Freund <andres@anarazel.de>
0 siblings, 1 reply; 3+ messages in thread
From: Andres Freund @ 2018-10-03 20:16 UTC (permalink / raw)
To: pgsql-committers@lists.postgresql.org
Ensure that snprintf.c's fmtint() doesn't overflow when printing INT64_MIN.
This isn't actually a live bug, as the output happens to be the
same. But it upsets tools like UBSan, which makes it worthwhile to
fix.
As it's an issue without practical consequences, don't backpatch.
Author: Andres Freund
Discussion: https://postgr.es/m/20180928001121.hhx5n6dsygqxr5wu@alap3.anarazel.de
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/4868e4468590bc32f9c3afed4ec795d6a7732c9d
Modified Files
--------------
src/port/snprintf.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: pgsql: Ensure that snprintf.c's fmtint() doesn't overflow when printing
@ 2018-10-03 20:24 Tom Lane <tgl@sss.pgh.pa.us>
parent: Andres Freund <andres@anarazel.de>
0 siblings, 1 reply; 3+ messages in thread
From: Tom Lane @ 2018-10-03 20:24 UTC (permalink / raw)
To: Andres Freund <andres@anarazel.de>; +Cc: pgsql-committers@lists.postgresql.org
Andres Freund <andres@anarazel.de> writes:
> Ensure that snprintf.c's fmtint() doesn't overflow when printing INT64_MIN.
Hm, I think you should s/uint64/unsigned long long/ to be consistent
with 595a0eab7.
regards, tom lane
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: pgsql: Ensure that snprintf.c's fmtint() doesn't overflow when printing
@ 2018-10-03 20:30 Andres Freund <andres@anarazel.de>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 0 replies; 3+ messages in thread
From: Andres Freund @ 2018-10-03 20:30 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: pgsql-committers@lists.postgresql.org
Hi,
On 2018-10-03 16:24:23 -0400, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > Ensure that snprintf.c's fmtint() doesn't overflow when printing INT64_MIN.
>
> Hm, I think you should s/uint64/unsigned long long/ to be consistent
> with 595a0eab7.
Fair point. Will push once tests finish.
Greetings,
Andres Freund
^ permalink raw reply [nested|flat] 3+ messages in thread
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2018-10-03 20:16 pgsql: Ensure that snprintf.c's fmtint() doesn't overflow when printing Andres Freund <andres@anarazel.de>
2018-10-03 20:24 ` Tom Lane <tgl@sss.pgh.pa.us>
2018-10-03 20:30 ` Andres Freund <andres@anarazel.de>
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