Le 2011-10-05 à 14:59:00, Iain Mott a écrit :
I'm having problems already cited elsewhere with rvbap - whereby it crashes with a "Signal 6" when adjusting the azimuth and having first configured the external with a 2D speaker array (eg. with a message: "define_loudspeakers 2 -45 45 0 180"). I've tried this with pdextended on linux (i'm using ubuntu 11.04) and also by compiling the external with this source: http://pure-data.svn.sourceforge.net/viewvc/pure-data/trunk/externals/vbap/ Same thing. Does anyone have any suggestions?
When you compile the external from source, you have the possibility to enable debug. I edited Makefile (with an uppercase) to change that, but debugging info was already enabled (-g). I changed the optimisation flags though (-O1 instead of -O6 -fomit-frame-pointer).
btw, the use of those flags is misleading, as -O6 is completely the same as -O3, and -fomit-frame-pointer (which hinders debugging) is already included in -O2 and -O3 (in -O1 it depends, see manpage).
-funroll-loops, however, has no impact on debuggability... Then if you run : valgrind pd vbap-help.pd and click around a bit, you get : ==10071== Invalid read of size 4 ==10071== at 0x4F42667: additive_vbap (vbap.c:419) ==10071== by 0x4F43527: vbap_bang (vbap.c:526) ==10071== by 0x4F45217: choose_ls_tuplets (define_loudspeakers.c:757) ==10071== by 0x4F45664: vbap_def_ls (define_loudspeakers.c:62) ==10071== by 0x80C7498: pd_typedmess (m_class.c:716) ==10071== by 0x3FFFFFFF: ??? ==10071== Address 0x43886bc is 4 bytes before a block of size 16 alloc'd ==10071== at 0x4024F12: calloc (vg_replace_malloc.c:467) ==10071== by 0x80CB2BC: getbytes (m_memory.c:24) ==10071== by 0x4F45217: choose_ls_tuplets (define_loudspeakers.c:757) ==10071== by 0x4F45664: vbap_def_ls (define_loudspeakers.c:62) ==10071== by 0x80C7498: pd_typedmess (m_class.c:716) ==10071== by 0x3FFFFFFF: ???which is a lot more informative when it can report function names, rather than just the library names...
______________________________________________________________________ | Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC
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