Hi,
I'm seeing a 'memory not mapped' crash on OSX (10.4.7) with R-devel
(r38715) when calling download.file() with a URL that doesn't exist.
Here is what reproduces it for me:
u404 <- "http://bioconductor.org/packages/doesnotexist.aaaa.3"
f <- "output.u404.txt"
download.file(u404, f)
trying URL 'http://bioconductor.org/packages/doesnotexist.aaaa.3'
*** caught segfault ***
address 0x522e6d6c, cause 'memory not mapped'
And here is a patch that resolves this for me. I'm pretty sure the
context should be closed after the query is made as to its status, but
maybe I'm missing something...
+ seth
Index: src/modules/internet/internet.c
==================================================================---
src/modules/internet/internet.c (revision 38715)
+++ src/modules/internet/internet.c (working copy)
@@ -489,10 +489,10 @@
int rc = RxmlNanoHTTPReturnCode(ctxt);
if(rc != 200) {
char *msg;
- RxmlNanoHTTPClose(ctxt);
/* bug work-around: it will crash on OS X if passed directly */
msg = _("cannot open: HTTP status was '%d %s'");
warning(msg, rc, RxmlNanoHTTPStatusMsg(ctxt));
+ RxmlNanoHTTPClose(ctxt);
return NULL;
} else {
type = RxmlNanoHTTPContentType(ctxt);