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bug#24358: 25.1.50; re-search-forward errors with "Variable binding dept

From: npostavs
Subject: bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size"
Date: Mon, 24 Oct 2016 22:00:02 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)

Eli Zaretskii <address@hidden> writes:
>> Oh, I see. Yes, I think you're right, the pointers stored in regstart,
>> regend, and fail_stack could become inconsistent. Hard to say what
>> kind of regex could trigger it, but it seems quite possible.
> Maybe we should simply call r_alloc_inhibit_buffer_relocation around
> any calls to regex.c functions, and remove the code you wrote to
> handle relocations internally.

How's this:

Attachment: v4-0001-Revert-fixes-to-allocation-of-regex-matching.patch
Description: reverting patch

Attachment: v4-0002-Inhibit-buffer-relocation-during-regex-searches.patch
Description: patch

I did 'make extraclean && . ../config-debug.sh && make' (all in one, to
ensure I didn't forget to clean) and it succeeded.

> I'm sorry I didn't look at this closer before, and thus caused you to
> work on all those changes, which we might now need to revert.

Yes, that's how hindsight works, you only get it when it's too late. ;)

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