[Gambas-user] Crash!

[Jussi Lahtinen]

OK, I managed to isolate this problem!
This will crash Gambas 3 rev 3452 @ Ubuntu 10.10 64bit.


Public Sub Form_Open()
Dim hFile As File
Dim sho As Short
Dim sStr As String = "" '"abc" Crash only occurs if string is null.

hFile = Open "/tmp/test" For Create
Write #hFile, 123 As Short
Write #hFile, sStr As String
Close #hFile

hFile = Open "/tmp/test" For Read
sho = Read #hFile As Short
sStr = Read #hFile As String
Close #hFile

End

Ready made project is attached.

Jussi




On Wed, Jan 12, 2011 at 23:06, Jussi Lahtinen <jussi.lahtinen at ...626...>wrote:

> Forgot... Gambas 3 rev 3452 @ Ubuntu 10.10 64bit
>
> Jussi
>
>
>
> On Wed, Jan 12, 2011 at 23:05, Jussi Lahtinen <jussi.lahtinen at ...626...>wrote:
>
>> These valgrind logs are taken also without compiler optimizations.
>>
>> Jussi
>>
>>
>>
>>
>> On Sat, Jan 8, 2011 at 22:33, Jussi Lahtinen <jussi.lahtinen at ...626...>wrote:
>>
>>> With compiler optimizations removed:
>>>
>>>
>>> Starting program: /usr/local/bin/gbx3 -p
>>> [Thread debugging using libthread_db enabled]
>>> [New Thread 0x7fffef2ba700 (LWP 19548)]
>>>
>>> warning: unable to load Qt translation: en_GB.utf8
>>>
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0x000000000042420f in SUBR_leave (nparam=2) at gbx_subr.c:42
>>> 42      BORROW(RP);
>>> (gdb) f 1
>>> #1  0x000000000042600b in SUBR_read (code=32000) at gbx_subr_file.c:441
>>> 441        SUBR_LEAVE();
>>> (gdb) bt
>>> #0  0x000000000042420f in SUBR_leave (nparam=2) at gbx_subr.c:42
>>> #1  0x000000000042600b in SUBR_read (code=32000) at gbx_subr_file.c:441
>>> #2  0x00000000004513f7 in EXEC_loop () at gbx_exec_loop.c:480
>>> #3  0x000000000040f69e in EXEC_function_loop () at gbx_exec.c:861
>>> #4  0x000000000040f601 in EXEC_function_real () at gbx_exec.c:848
>>> #5  0x0000000000411f63 in EXEC_public_desc (class=0x731148, object=0x0,
>>>     desc=0x8faae8, nparam=0) at gbx_exec.c:1497
>>> #6  0x000000000043d428 in main (argc=1, argv=0x7fffffffe338) at gbx.c:362
>>>
>>> Jussi
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Jan 6, 2011 at 17:43, Jussi Lahtinen <jussi.lahtinen at ...626...>wrote:
>>>
>>>> Hi!
>>>> I cannot really isolate my problem, but in this case it happens when
>>>> loading string data from file to object
>>>> (something like "someobject.sStr = Read #hFile As String").
>>>>
>>>> Gambas 3 rev 3447 @ Ubuntu 10.10 64bit
>>>>
>>>> $ gbc3 -agpmt
>>>> OK
>>>> $ gdb gbx3
>>>> GNU gdb (GDB) 7.2-ubuntu
>>>> Copyright (C) 2010 Free Software Foundation, Inc.
>>>> License GPLv3+: GNU GPL version 3 or later <
>>>> http://gnu.org/licenses/gpl.html>
>>>> This is free software: you are free to change and redistribute it.
>>>> There is NO WARRANTY, to the extent permitted by law.  Type "show
>>>> copying"
>>>> and "show warranty" for details.
>>>> This GDB was configured as "x86_64-linux-gnu".
>>>> For bug reporting instructions, please see:
>>>> <http://www.gnu.org/software/gdb/bugs/>...
>>>> Reading symbols from /usr/local/bin/gbx3...done.
>>>> (gdb) set args -p
>>>> (gdb) run
>>>> Starting program: /usr/local/bin/gbx3 -p
>>>> [Thread debugging using libthread_db enabled]
>>>> [New Thread 0x7fffef2ba700 (LWP 3790)]
>>>> warning: unable to load Qt translation: en_GB.utf8
>>>>
>>>> Program received signal SIGSEGV, Segmentation fault.
>>>> 0x0000000000414b91 in SUBR_leave (nparam=2) at gbx_subr.c:42
>>>> 42      BORROW(RP);
>>>> (gdb) bt
>>>> #0  0x0000000000414b91 in SUBR_leave (nparam=2) at gbx_subr.c:42
>>>> #1  0x0000000000430132 in EXEC_loop () at gbx_exec_loop.c:480
>>>> #2  0x0000000000409a75 in EXEC_function_loop () at gbx_exec.c:861
>>>> #3  0x000000000040a4c5 in EXEC_function_real () at gbx_exec.c:848
>>>> #4  0x00000000004227e5 in main (argc=1, argv=<value optimised out>)
>>>>     at gbx.c:362
>>>>
>>>> (gdb) f 1
>>>> #1  0x0000000000430132 in EXEC_loop () at gbx_exec_loop.c:480
>>>> 480      (*(EXEC_FUNC_CODE)SubrTable[(code >> 8) - 0x28])(code);
>>>>
>>>>
>>>> Also see attached valgrind log.
>>>>
>>>> Jussi
>>>>
>>>>
>>>
>>
>
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