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Subject: [Bug middle-end/43631] var-tracking inserts notes with non-NULL BLOCK_FOR_INSN in between basic blocks
Date: Fri, 07 Dec 2012 10:17:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43631

--- Comment #10 from stevenb.gcc at gmail dot com <stevenb.gcc at gmail dot com> 2012-12-07 10:16:49 UTC ---
On Fri, Dec 7, 2012 at 11:11 AM, izamyatin at gmail dot com wrote:
> Looks like there is some garbage in BLOCK_FOR_INSN field for barrier
> instruction...

A BARRIER  doesn't even have a BLOCK_FOR_INSN. It's not an insn, after all.

Where/how do you end up looking at BLOCK_FOR_INSN for a BARRIER?