Memory leak

Carsten Haitzler (The Rasterman) raster at rasterman.com
Tue May 9 16:51:04 PDT 2006


On Wed, 10 May 2006 02:32:50 +1000 Russell Shaw <rjshaw at netspace.net.au>
babbled:

> Hi,
> In my code, i have:
> 
>     malloc_stats();
> 
>     Xutf8DrawString(
>          app->display,
>          win,
>          wm->fontset.fontset,
>          wm->title_gc.gc,
>          x,
>          y,
>          cli->title,
>          strlen(cli->title)
>     );
> 
>     malloc_stats();

try drawing a second time. does it leak again?

> 
> malloc_stats() shows a leak of 56 bytes:
> 
> Arena 0:
> system bytes     =    2834432
> in use bytes     =    2540544
> Total (incl. mmap):
> system bytes     =    2834432
> in use bytes     =    2540544
> max mmap regions =          0
> max mmap bytes   =          0
> 
> (gdb) next
> ...
> 
> Arena 0:
> system bytes     =    2834432
> in use bytes     =    2540600
> Total (incl. mmap):
> system bytes     =    2834432
> in use bytes     =    2540600
> max mmap regions =          0
> max mmap bytes   =          0
> 
> 
> By using a malloc hook, it seems the pointer to the memory from
> Xutf8DrawString() is not freed.
> 
> Backtrace:
> 
> #0  my_malloc_hook (size=20, caller=0xb7f690ec) at main.c:331
> #1  0xb7e06db5 in malloc () from /lib/tls/libc.so.6
> #2  0xb7f690ec in create_tocs_conv (lcd=0x1, methods=0xb7fd8f30)
> #at ../../../src/xlibi18n/lcUTF8.c:495 3  0xb7f5e59c in get_converter
> #(from_lcd=0x808ceac, from_type=130, to_lcd=0x808ceac, to_type=81) at 
> ../../../src/xlibi18n/lcConv.c:74
> #4  0xb7f5e932 in _XlcOpenConverter (from_lcd=0x808ceac, from=0xb7d8e3a7
> #"utf8String", 
> to_lcd=0x808ceac, to=0xb7d8e3be "charSet")
> at ../../../src/xlibi18n/lcConv.c:308
> #5  0xb7d8e164 in _XomInitConverter (oc=0x813309c, type=XOMUtf8String) at 
> ../../../../modules/om/generic/omXChar.c:472
> #6  0xb7d8bfb0 in _XomGenericDrawString (dpy=0x8087ffc, d=2097232,
> #oc=0x813309c, gc=0x812ecc4, x=3, 
> y=14, type=3, text=0x8122f5c "/home/russell/AAProjs/GNU/src", length=40) at 
> ../../../../modules/om/generic/omText.c:307
> #7  0xb7d8c8a7 in _Xutf8GenericDrawString (dpy=0x3, d=3, oc=0x3, gc=0x3, x=3,
> #y=3, text=0x3 <Address 
> 0x3 out of bounds>, length=3) at ../../../../modules/om/generic/omText.c:370
> #8  0xb7f6bff2 in Xutf8DrawString (dpy=0x3, d=3, font_set=0x8133958, gc=0x3,
> #x=3, y=3, text=0x3 
> <Address 0x3 out of bounds>, text_len=3)
> at ../../../src/xlibi18n/utf8Wrap.c:127
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> 


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    raster at rasterman.com
裸好多
Tokyo, Japan (東京 日本)



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