Bug #9158: bug in rb_readlink() in file.c (fixed)

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: trunk
• Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN

[nowacki (Maciek Nowacki)]

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

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• ruby -v set to trunk