[Gambas-user] Elusive Gambas3 crashing bug

[Benoît Minisini]

> Hi!
> I'm doing quick and dirty "GambasTester" project.
> Idea is to fuzz with all commands to find out if all works correctly within
> current revision.
> Of course it is not possible to test all combinations and situations, but
> much better than nothing.
> I know IDE is pretty good tester itself, but this will be better in some
> aspects, as it will automatically test things for you
> and it uses commands that IDE doesn't.

Good idea!

> 
> While doing this I crashed gambas several times.
> I ran this command in IDE's console (replacing X with several different
> numbers):
> ? bin(rol(1073741784+ shl(9,2) + shr(24,3),X ),32)
> 
> 
> (gdb) set args /usr/local/bin/gambas3
> (gdb) run
> Starting program: /usr/local/bin/gbr3 /usr/local/bin/gambas3
> [Thread debugging using libthread_db enabled]
> warning: unable to load Qt translation: en_GB.utf8
> [New Thread 0x7fffdfa60710 (LWP 31378)]
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000423c50 in realloc_string (ptr=0x7fffffffc4a0, new_len=8)
>     at gbx_string.c:242
> 242                STRING *nstr = alloc_string(new_len);
> (gdb) f 1
> #1  STRING_extend (ptr=0x7fffffffc4a0, new_len=8) at gbx_string.c:389
> 389            str = realloc_string(STRING_from_ptr(*ptr), new_len);
> 
> 
> All logs are from very different cases, sometimes gambas crashes
> immediately, some times it need much fuzzing.
> Usually crash happens when I hit enter on console and then click focus to
> editor.
> See attached valgrind logs.
> 
> Gambas3 rev 3281 @ Ubuntu 10.04 64bit
> 
> Jussi

I will look at the log, but I don't understand what you did *exactly* to get 
the crash.

Regards,

-- 
Benoît Minisini