[Thunar-dev] ThunarVfsInfo: Bug in thunar_vfs_info_new_for_path?

[Jannis Pohlmann]

Benedikt Meurer schrieb:
> Jannis Pohlmann wrote:
> 
>>Benedikt Meurer schrieb:
>>
>>
>>>Jannis Pohlmann wrote:
>>>
>>>
>>>
>>>>>Does Thunar work for you? What version of shared-mime-info do you use
>>>>>(if > 0.16, do you have mmap()'able caches)? Does it work with other
>>>>>files (if so, please send me the XmlIniFile.html)? Have you tried with
>>>>>-O0 (especially for thunar-vfs)?
>>>>
>>>>Thunar works fine here, yes. I'm using shared-mime-info 0.16-3. No, it
>>>>doesn't work with other files. -O0 (for both, the program and
>>>>thunar-vfs) doesn't change anything.
>>>
>>>
>>>Wow, this is really interesting, because Thunar uses exactly the same
>>>code in various places.
>>>
>>>
>>>
>>>
>>>>>Other than that, you could try to add printf statements to thunar-vfs,
>>>>>maybe that helps to locate the problem.
>>
>>
>>I have attached my changes to thunar-vfs-info.c. They are marked with
>>
>>  /* MOD>> */
>>  ...
>>  /* <<MOD */
>>
>>I also attached a simplified main.c source. The output now is:
>>
>>jannis at nebelsee ~/tmp/thunar-vfs> rm main.o test; bash build.sh; ./test
>>~/Arbeit/XmlIniFile.html
>>Path name (before info): XmlIniFile.html
>>thunar-vfs-info.c, 116: XmlIniFile.html
>>thunar-vfs-info.c, 652: XmlIniFile.html
>>thunar-vfs-info.c, 671: XmlIniFile.html
>>thunar-vfs-info.c, 740: XmlIniFile.html
>>thunar-vfs-info.c, 852: XmlIniFile.html
>>thunar-vfs-info.c, 853: XmlIniFile.html
>>main.c, 27: XmlIniFile.html
>>main.c, 28:
>>
>>This is absolutely weird. As you can see, the info->path member is
>>readable in thunar-vfs-info.c (in _thunar_Vfs_info_new_internal). But as
>>soon as it is returned to the main function, you can not access it
>>anymore. Strangely enough, you can still access the path object created
>>in the main routine.
>>
>>I'm either totally stupid or there is something wrong with ... uhm ...
>>don't know.
> 
> 
> Looks like some strang compiler (optimization) bug. What version of gcc
> do you use?

gcc (GCC) 4.0.2 20050808 (prerelease)

I'll try it with gcc-3.4 now.

Regards,
Jannis