seg fault with strsplit (PR#158)

Peter Dalgaard BSA p.dalgaard@biostat.ku.dk
06 Apr 1999 10:30:27 +0200


jlindsey@alpha.luc.ac.be writes:

> Try the following with R 63.3:
> 
> test <- function(z){
> 	ch1 <- deparse(z,width=500)
> 	ch <- NULL
> 	for(i in 1:length(ch1))ch <- paste(ch,ch1[i],collapse=" ")
> 	a <- gsub("(\\[(0|1|2|3|4|5|6|7|8|9|:|,)+\\])|([][+*/^():!<>%&|~,{}\"\\\=-])|( [0-9]+)|(^[0-9]+)"," ",ch)
> 	print("here")
> 	strsplit(a," ")
> }
> test(glm)

We know... Buffer overflow. There's been a patch for it on r-devel by Jean
Meloche, using a short-lived malloc/free thing, but I'm still waiting
for someone to assure me that it won't interfere with current and
future memory management schemes.

-- 
   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
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