V parser segfault with -silent, discovered with radamsa, for a very long -----n----m------ pattern.

[spytheman]

V doctor:

V full version: V 0.4.7 c92577e.18f8999
OS: linux, Ubuntu 20.04.6 LTS
Processor: 4 cpus, 64bit, little endian, Intel(R) Core(TM) i3-3225 CPU @ 3.30GHz

getwd: /space/v/oo
vexe: /space/v/oo/v
vexe mtime: 2024-08-22 10:31:40

vroot: OK, value: /space/v/oo
VMODULES: OK, value: /home/delian/.vmodules
VTMP: OK, value: /tmp/v_1000

Git version: git version 2.45.2
Git vroot status: weekly.2024.34-21-g18f89991-dirty
.git/config present: true

CC version: cc (Ubuntu 10.5.0-1ubuntu1~20.04) 10.5.0
thirdparty/tcc status: thirdparty-linux-amd64 0134e9b9

What did you do?
./v -g -o vdbg cmd/v && ./vdbg -silent bug7_shortened.v

What did you expect to see?

The compiler not segfaulting, even with -silent

What did you see instead?

#0 15:33:07 ^ master /space/v/oo>./v -silent bug7_shortened.v
Segmentation fault (core dumped)

bug7_shortened.v:

----------n----------------------------------------------------------------------------------m-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------M'Hellprintln('Hel-o, World!')

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[spytheman]

The above is a shortened variant. The full file generated by radamsa is here (98KB):
bug7.v.txt