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bug#23269: MirBSD 10 i386 test failures [Re: grep-2.24.13-bed6 feedback

From: Paul Eggert
Subject: bug#23269: MirBSD 10 i386 test failures [Re: grep-2.24.13-bed6 feedback
Date: Tue, 19 Apr 2016 09:04:36 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.1

On 04/18/2016 08:05 AM, Paul Eggert wrote:
'm afraid someone with access to MirBSD will need to debug it.

On second thought there is a simpler fix: stop using btowc. I installed the attached patch, which is a good idea anyway. By using only mbrtowc (which we need to use anyway), it avoids problems on misconfigured systems like MirOS BSD where btowc disagrees with mbrtowc.

After writing and debugging this patch I looked at Gawk and noticed that it already has its own equivalent of this patch's new mbrtowc_cache variable. Gawk obtains its cache via btowc; although this doesn't work on MirOS BSD due to its buggy btowc, Arnold says he's not worried about MirOS BSD any more which is quite understandable. Still, it's a bit odd to have two caches in Gawk that do the same thing; perhaps we can unify them at some point.

Attachment: 0001-dfa-remove-dependency-on-btowc.patch
Description: Source code patch

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