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null ptr deref, segfault Perl_sv_vcatpvfn_flags (sv.c:12398) #15563
Fuzzing Perl v5.25.4-20-gc2f7c0b* with AFL, ASAN and libdislocator.
1713 lines of Debug output later...
==19229==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000038 (pc 0x00000097c6ee bp 0x7fffba9d9130 sp 0x7fffba9d8b80 T0)
AddressSanitizer can not provide additional info.
Thank you for filing this report. You have helped make Perl better.
With the release today of Perl 5.26.0, this and 210 other issues have been
Perl 5.26.0 may be downloaded via:
If you find that the problem persists, feel free to reopen this ticket.