RCall stack smashing detected - Julia 0.4.3 about rcall.jl

[randy3k]

I guess it was caused by insufficient memory in R, it works fine if we run gc() regularly.

using RCall
for( i in 1:1000 ) 
    println(i)
    rcall(:gc)
    rcopy(string("c(", join( [rand() * j for j in  1:1000], "," ), ")"))
end

Please note that you created a long string and it is passed to R to be parsed and evaluated. R needs to keep it temporarily. If a lot of such variables are created at the same time, it causes R to crash.

I also wonder why gc() is not fired automatically if there is not sufficient memory.

[simonbyrne]

Hmm, that is odd.

[mdcfrancis]

This is the simplest reproduction, in the real case we have a collection of fairly large R object which we are calling from Julia with a map. Every so often it crashes, it does look like it may be a gc issue.

[randy3k]

It seems that dc7975e fixes this.

gc actually has been fired, but it is fired in a wrong time. It wrongly collects the string going to be parsed in rparse_p. To fix it, st is protected now.

[randy3k]

@mdcfrancis
could you confirm that it is fixed?

[simonbyrne]

Please reopen if this is still an issue.

[mdcfrancis]

Sorry for not replying - yes I see that this fixed this case.