PSPP-BUG: [bug #58595] Use after free in fh_get_referent

[Andrea Fioraldi]

Follow-up Comment #2, bug #58595 (project pspp):

This is strange, I can trigger the bug with ./pspp -O format=txt -o /dev/null
-b uaf2

I double checked that the uploaded file is correct, it is.
The SHA1 of uaf2 is 84eeb2a75ba4c49c74225cf999a16c7f8192261b.

I'm at commit 53d339111a9f51561cfccc65764874cdf54e501a.

Are you sure that are you using AddressSanitizer?

If you are using GCC maybe the sanitizer is behind the implementation in LLVM
and has more false negatives.

Try to update GCC or use Clang (you need to manually edit math.h and remove
__builtin_isnan* uses).

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