From: Maciek Nowacki <nowacki@...>
Date: 2013-11-25T22:41:04-07:00
Subject: [ruby-core:58587] bug in rb_readlink() in file.c (fixed)

Hello,

Here is a cute bug that has existed for a little while in file.c . Ruby will tend to crash when File.readlink() is called on a symlink with a long target. Fix:

--- -	2013-11-25 22:10:59.694183795 -0700
+++ file.c	2013-11-25 22:10:03.076352889 -0700
@@ -2529,8 +2529,8 @@
	    || (rv < 0 && errno == ERANGE) /* quirky behavior of GPFS */
#endif
	) {
-	rb_str_modify_expand(v, size);
	size *= 2;
+	rb_str_modify_expand(v, size);
    }
    if (rv < 0) {
	rb_str_resize(v, 0);

Maciek Nowacki
Application Support Analyst
Information Services & Technology
University of Alberta