[perl #129898] op.c:9874: OP *Perl_ck_rvconst(OP *): Assertion`((gv)->sv_flags & 0x00000800)' failed

# New Ticket Created by  Brian Carpenter 
# Please include the string:  [perl #129898]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=129898 >


Triggered with Perl v5.25.6 (v5.25.5-106-g877b982).

od -tx1 test185
0000000 40 30 3d 73 70 6c 69 74 28 30 2c 3c 3c 29 3b 65
0000020 76 61 6c 24 27 2e 70 6f 70 28 40 30 29 2e 27 3d
0000040 27 2e 30 77 68 69 6c 65 40 30 0a 3a 3a 30 25 3a
0000060 3a 0a
0000062

./perl test185

Use of bare << to mean <<"" is deprecated at test185 line 1.
perl: op.c:9874: OP *Perl_ck_rvconst(OP *): Assertion `((gv)->sv_flags &
0x00000800)' failed.
Aborted

• [perl #129898] op.c:9874: OP *Perl_ck_rvconst(OP *): Assertion`((gv)->sv_flags & 0x00000800)' failed by Brian Carpenter