Re: [igraph] bipartite.projection : is this an error ?

[Tamas Nepusz]

> Everytime I execute the "bipartite.projection" function, I receive  
> this error (in red).
[...]
> R(309,0xa08ae720) malloc: *** error for object 0x164fdc8: pointer  
> being freed was not allocated
Same for me (igraph 0.5.2, R 2.9.0, Mac OS X 10.6.1). It looks like  
igraph is trying to free an object twice, at least that's my guess  
from the backtrace:

(gdb) bt
#0  0x90fba27e in malloc_error_break ()
#1  0x90ec9203 in free ()
#2  0x029c2917 in igraph_vector_destroy ()
#3  0x028d67e9 in IGRAPH_FINALLY_FREE ()
#4  0x02969fa2 in R_igraph_finalizer ()
#5  0x0008200b in do_dotcall ()
#6  0x000a77d2 in Rf_eval ()
#7  0x0006105d in Rf_endcontext ()
#8  0x000aa18f in Rf_applyClosure ()
#9  0x000a7498 in Rf_eval ()
#10 0x000d0308 in Rf_ReplIteration ()
#11 0x000d06c0 in R_ReplConsole ()
#12 0x000d09fb in run_Rmainloop ()
#13 0x00001fa0 in main ()

Maybe Gabor can tell more about it.

--
Tamas