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| author | Thomas Munro <tmunro@postgresql.org> | 2024-04-11 13:19:29 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2024-04-11 13:23:45 +1200 |
| commit | d8f5acbdb9b22106db583e3cbb177d34e6b18eeb (patch) | |
| tree | c567875ba8e466a15353760d828406ed5f9a673a /src/include/lib/binaryheap.h | |
| parent | f56a9def71bb1d2ccf4fa01a4d1e082c1063d921 (diff) | |
| download | postgresql-d8f5acbdb9b22106db583e3cbb177d34e6b18eeb.tar.gz postgresql-d8f5acbdb9b22106db583e3cbb177d34e6b18eeb.zip | |
Fix potential stack overflow in incremental backup.
The user can set RELSEG_SIZE to a high number at compile time, so we
can't use it to control the size of an array on the stack: it could be
many gigabytes in size. On closer inspection, we don't really need that
intermediate array anyway. Let's just write directly into the output
array, and then perform the absolute->relative adjustment in place.
This fixes new code from commit dc212340058.
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/CA%2BhUKG%2B2hZ0sBztPW4mkLfng0qfkNtAHFUfxOMLizJ0BPmi5%2Bg%40mail.gmail.com
Diffstat (limited to 'src/include/lib/binaryheap.h')
0 files changed, 0 insertions, 0 deletions