#2778 stack-overflow on parse_primary_expression()

[liuchenyifan]

version: gnuplot 6.1 last modified 2025-03-05
system: ubuntu 22.04

use this command to reproduce: gnutplot poc
message from ASAN:
=================================================================
==1105154==ERROR: AddressSanitizer: stack-overflow on address 0x7fff1b458fc0 (pc 0x55e08e31b3d4 bp 0x55e08e846920 sp 0x7fff1b458fc0 T0)
#0 0x55e08e31b3d4 in parse_primary_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:661
#1 0x55e08e3273f9 in accept_multiplicative_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:500
#2 0x55e08e3273f9 in accept_additive_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:492
#3 0x55e08e3273f9 in accept_bitshift_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:484
#4 0x55e08e32aa96 in accept_relational_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:476
#5 0x55e08e32aa96 in accept_equality_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:468
#6 0x55e08e32aa96 in accept_AND_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:460
#7 0x55e08e32aa96 in accept_exclusive_OR_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:452
#8 0x55e08e32aa96 in accept_inclusive_OR_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:444
#9 0x55e08e32aa96 in accept_logical_AND_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:436
#10 0x55e08e32aa96 in accept_logical_OR_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:428
#11 0x55e08e32aa96 in parse_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:420
#12 0x55e08e31d0cc in parse_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:1397
#13 0x55e08e31d0cc in parse_primary_expression /home/ubuntu/asan_program/gnuplot-main/src/parse.c:664