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Re: [WIP]Vertical Clustered Index (columnar store extension) - take2

Andres Freund <andres@anarazel.de> — 2025-12-18T00:25:00Z

Hi,

On 2025-12-17 12:40:13 +1100, Peter Smith wrote:
> Here is the latest set of VCI patches.

This fails the tests under the undefined behaviour sanitizer.

Se e.g.
https://cirrus-ci.com/task/6313371143766016

There are a lot of crashes due to ubsan failures. One of them is:

[21:22:15.116] stderr:
[21:22:15.116] #   Failed test 'newline in dbname: stderr matches'
[21:22:15.116] #   at /tmp/cirrus-ci-build/src/bin/pg_dump/t/003_pg_dump_with_server.pl line 29.
[21:22:15.116] #                   '==58220==Using libbacktrace symbolizer.
[21:22:15.116] # ../src/bin/pg_dump/pg_dump.c:20198:13: runtime error: load of value 116, which is not a valid value for type '_Bool'
[21:22:15.116] #     #0 0x55ae2a204568 in addBoundaryDependencies ../src/bin/pg_dump/pg_dump.c:20198
[21:22:15.116] #     #1 0x55ae2a23d768 in main ../src/bin/pg_dump/pg_dump.c:1209
[21:22:15.116] #     #2 0x7f5add233ca7  (/lib/x86_64-linux-gnu/libc.so.6+0x29ca7) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8)
[21:22:15.116] #     #3 0x7f5add233d64 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d64) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8)
[21:22:15.116] #     #4 0x55ae2a1fbda0 in _start (/tmp/cirrus-ci-build/build/tmp_install/usr/local/pgsql/bin/pg_dump+0x55da0) (BuildId: 19f1772fd2938fdb30967788098e73d390996698)
[21:22:15.116] #

I.e. pg_dump is triggering the undefined behaviour sanitizer because of a
bogus value in a field that's supposed to be a boolean.

Greetings,

Andres