Re: [Qemu-devel] [Qemu-trivial] [PATCH 2/9] arm: fix memory leak

[Gonglei <arei.gonglei@huawei.com>]

On 2015/3/4 21:16, Michael Tokarev wrote:
> 27.02.2015 10:50, arei.gonglei@huawei.com wrote:
> []
>> @@ -565,6 +565,7 @@ static void create_flash(const VirtBoardInfo *vbi)
>>              error_report("Could not load ROM image '%s'", bios_name);
>>              exit(1);
>>          }
>> +        g_free(fn);
>>      }
>>  
>>      create_one_flash("virt.flash0", flashbase, flashsize);
>>
> 
> This change introduces a compiler error:
> 
> hw/arm/virt.c: In function ‘create_flash’:
> hw/arm/virt.c:568:16: error: passing argument 1 of ‘g_free’ discards ‘const’ qualifier from pointer target type [-Werror]
>          g_free(fn);
>                 ^
> /usr/include/glib-2.0/glib/gmem.h:69:7: note: expected ‘gpointer’ but argument is of type ‘const char *’
>  void  g_free           (gpointer  mem);
>        ^
> 
> This is because just a few lines above, `fn' variable
> is declared as `const char *', which obviously should
> not be used with any *free() functions.
> 
Yes, and I found another similar problem in
 [PATCH 9/9] microblaze: fix memory leak
which you had pulled, maybe make sense wait a minuter.
Sorry for this.
> The solution is to remove `const' from the variable
> declaration.
> 
Correct.
> And a much more general solution is to actually test
> patches before submitting them.  You obviously did not
> test this series, having 3 errors in 9 patches, ie,
> 1/3 of your patches does not work...
> 
Apologize earnestly for troubling you. :(

I just thought they are so trivial, meanwhile I hadn't arm compiling environment (lack of
libfdt-dev), and assigned "--target-list=x86_64-softmmu" that moment.

Regards,
-Gonglei