Message-ID: <x28ytlb42n.fsf@biostat.ku.dk>
Date: 2003-05-05T21:08:28Z
From: Peter Dalgaard
Subject: segfault when applying strange coercion (PR#2923)
In-Reply-To: <200305051736.h45Ha92b016451@pubhealth.ku.dk>
ligges@statistik.uni-dortmund.de writes:
> I made a mistake -- and R crashed. A (more or less) reproducible example
> seems to be:
>
> x <- matrix(nrow=20000, ncol=20)
> x$any <- numeric(0)
>
> It is possible to crash R by executing these lines several times (1 -
> 20) on Windows as well as on Solaris (might be related to PR#2880 -
> let's call it "non-existing list elements")
Linux too: (r-devel)
...
> x <- matrix(nrow=20000, ncol=20) ; x$any <- numeric(0)
Warning message:
Coercing LHS to a list
> x <- matrix(nrow=20000, ncol=20) ; x$any <- numeric(0)
Program received signal SIGSEGV, Segmentation fault.
Rf_copyMostAttrib (inp=0xa2325a8, ans=0x402f9008)
at ../../../R/src/main/attrib.c:155
155 if ((TAG(s) != R_NamesSymbol) &&
Tried running it with gctorture() but haven't gotten the prompt back
yet....
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk) FAX: (+45) 35327907