From @geeknik

Triggered with Perl v5.25.10 (v5.25.9-154-gd8f2fe0) while fuzzing with AFL.

./perl -e 'm(@​{if(0){sub d{]]])}return'
ASAN​:SIGSEGV

==29483==ERROR​: AddressSanitizer​: SEGV on unknown address 0x000000000000
(pc 0x000000560efe bp 0x7ffcc2b41050 sp 0x7ffcc2b40e10 T0)
  #0 0x560efd in Perl_ck_return /home/geeknik/perl/op.c​:10990​:9
  #1 0x5124fe in Perl_op_convert_list /home/geeknik/perl/op.c​:4889​:9
  #2 0x6bffd2 in Perl_yyparse /home/geeknik/perl/perly.y​:883​:23
  #3 0x59d611 in S_parse_body /home/geeknik/perl/perl.c​:2376​:9
  #4 0x593890 in perl_parse /home/geeknik/perl/perl.c​:1691​:2
  #5 0x4dea05 in main /home/geeknik/perl/perlmain.c​:121​:18
  #6 0x7f61db447b44 in __libc_start_main
/build/glibc-qK83Be/glibc-2.19/csu/libc-start.c​:287
  #7 0x4de69c in _start (/home/geeknik/perl/perl+0x4de69c)

AddressSanitizer can not provide additional info.
SUMMARY​: AddressSanitizer​: SEGV /home/geeknik/perl/op.c​:10990 Perl_ck_return
==29483==ABORTING

From @arc

Thanks for the report. This is fixed in e5c165a.

--
Aaron Crane ** http​://aaroncrane.co.uk/

The RT System itself - Status changed from 'new' to 'open'

@arc - Status changed from 'open' to 'resolved'