#2773 stack-overflow on enhanced_recursion()

[liuchenyifan]

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

use this command to reproduce: gnutplot poc
message from ASAN:
=================================================================
==1066000==ERROR: AddressSanitizer: stack-overflow on address 0x7ffd7b8e7fb8 (pc 0x7fea96a7c7ad bp 0x7ffd7b8e8820 sp 0x7ffd7b8e7fa0 T0)
#0 0x7fea96a7c7ad in StrstrCheck ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:577
#1 0x7fea96ad6c70 in __interceptor_strstr ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:597
#2 0x7fea96ad6c70 in __interceptor_strstr ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:590
#3 0x5603cfe85a55 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2212
#4 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#5 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#6 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#7 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#8 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#9 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#10 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#11 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#12 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#13 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456
#14 0x5603cfe868c6 in enhanced_recursion /home/ubuntu/asan_program/gnuplot-main/src/term.c:2456