Bug#1087564: pcre2: FTBFS on 32-bit: test failures, memory allocations smaller than expected

Source: pcre2
Version: 10.44-2
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)
X-Debbugs-Cc: [email protected], [email protected], [email protected], [email protected]
User: [email protected]
Usertags: armhf

https://buildd.debian.org/status/fetch.php?pkg=pcre2&arch=armhf&ver=10.44-2&stamp=1731586953&raw=0
shows lots of test failures that look like this:

>  /((?i)b)/
> -Memory allocation - compiled block : 153
> +Memory allocation - compiled block : 129
>  Memory allocation - code portion   : 17

armel has a different failure mode (some of the tests crash) which I have
reported as a separate bug - that's out of scope here. All of the other
32-bit architectures (i386, hppa, powerpc, x32) show symptoms similar to
armhf, which makes me think this is a general 32-bit problem rather than
being architecture-specific (and armel would probably have the same issue
if its tests hadn't crashed first).

Is this perhaps just an overly-strict test that is making assumptions
about the size of data structures on 64-bit architectures, which aren't
going to be true on 32-bit because pointers and 'long' are smaller there?

10.44-1 in experimental previously failed with similar symptoms.

    smcv