[R-SIG-Mac] src based build dying on download.packages

[Seth Falcon]

Hi Vince,

Someone in our lab was seeing a similar segfault here on OS X.  We
didn't get to the bottom of it, but if I recall, it was something with
how the error message is handled inside of download.file.

Can you try getting the gdb backtrace?  Here's how I would try:

    R -d gdb
    # gdb starts up
    gdb> run
    download.file(url="http://www.r-project.org/FOOBAR123",
                  destfile=tempfile())
    # I think you will get the same crash and be back to gdb
    gdb> bt

+ seth