R crashes while printing variable read from read.delim() (PR#10366)

Full_Name: Markus Breitenbach
Version: 2.5.1
OS: Windows
Submission from: (NULL) (70.58.24.243)

cdcr <- read.delim("cdcr_flat_survival.dat")
dim(cdcr)

[1] 7162  387

cdcr

# results in stack overflow

# bug reproduced in 2.4.1/linux and 2.5.1/windows...