[Rd] segfault on functions with 'source' attribute set to a boolean or a number (PR#10437)

[karl at huftis.org]

Full_Name: Karl Ove Hufthammer
Version: 2.6.0
OS: Linux (Fedora 7)
Submission from: (NULL) (129.177.61.84)


When viewing a function that has its 'source' attribute set to a boolean or a
numeric, R crashes with a segfault. (Setting 'source' to a character vector does
not make R crash, however.)

Steps to reproduce:

> attr(lm,"source")=FALSE
> lm

 *** caught segfault ***
address 0x18, cause 'memory not mapped'