read.graph crashes on gml files

[Solomon Messing]

I've tried this on gml files from a variety of sources.

R version 2.15.1 MacOSX

gdir <- dir('graphs')
> g <- read.graph(paste("graphs/",gdir[2],sep=""),"gml")

 *** caught segfault ***
address 0x0, cause 'memory not mapped'

Traceback:
 1: .Call("R_igraph_read_graph_gml", file, PACKAGE = "igraph")
 2: read.graph.gml(file, ...)
 3: read.graph(paste("graphs/", gdir[2], sep = ""), "gml")

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace

=================================

Also crashes in centos:

> g <- read.graph(gdir[10],"gml")

 *** caught segfault ***
address (nil), cause 'memory not mapped'

Traceback:
 1: .Call("R_igraph_read_graph_gml", file, PACKAGE = "igraph")
 2: read.graph.gml(file, ...)
 3: read.graph(gdir[10], "gml")

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace

[Gábor Csárdi (gabor.csardi)]

We will need a little more details, e.g. the exact igraph version, and also a file that reproduces this, because it works fine for me:

g <- graph.ring(10)
write.graph(g, "/tmp/g.gml", format="gml")
g2 <- read.graph("/tmp/g.gml", format="gml")

(Apart form some warnings about attributes.)

[Gábor Csárdi (gabor.csardi)]

The development of igraph has moved to github, so please do not comment on this bug here. You are of course welcome to comment on github, here:
https://github.com/igraph/igraph/issues/466