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RFA: PATCH to check for overflow in make_tree_vec_stat

From: Jason Merrill <jason at redhat dot com>
To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
Date: Thu, 18 May 2017 22:32:29 -0400
Subject: RFA: PATCH to check for overflow in make_tree_vec_stat
Authentication-results: sourceware.org; auth=none

A patch I've been putting together ran into strange memory corruption
issues which turned out to be because the calculation in
make_tree_vec_stat was overflowing and allocating a small TREE_VEC
instead of a large one.  This assert should work as a simple sanity
check.

Tested x86_64-pc-linux-gnu, OK for trunk?

Attachment: vec-overflow.diff
Description: Text document

Follow-Ups:
- Re: RFA: PATCH to check for overflow in make_tree_vec_stat
  - From: Richard Biener

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