From: "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>
Date: 2013-09-12T21:57:51+09:00
Subject: [ruby-core:57159] [ruby-trunk - Bug #8864] sprintf segfaults with	too high precision


Issue #8864 has been updated by nagachika (Tomoyuki Chikanaga).

Backport set to 1.9.3: REQUIRED, 2.0.0: REQUIRED
ruby -v set to -


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Bug #8864: sprintf segfaults with too high precision
https://bugs.ruby-lang.org/issues/8864#change-41770

Author: Aaronneyer (Aaron Neyer)
Status: Closed
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: -
Backport: 1.9.3: REQUIRED, 2.0.0: REQUIRED


In any Ruby version (attempted with 1.8.7, 1.9.3, and 2.0.0), specifying a very large precision in sprintf can cause a segmentation fault.

The following code will cause the segmentation fault.

`"%.99999f" % 10`

The number to cause a segfault is dependent on the system. On my laptop, any number above 1100 would cause it, and on an EC2 micro instance, around 2500 was the limit.


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