GNU bug report logs - #78827
Performance bug with extended regex {i,j} range

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Package: sed;

Reported by: Szász Gergely <szaszg <at> hu.inter.net>

Date: Wed, 18 Jun 2025 15:19:02 UTC

Severity: normal

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Report forwarded to bug-sed <at> gnu.org:
bug#78827; Package sed. (Wed, 18 Jun 2025 15:19:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Szász Gergely <szaszg <at> hu.inter.net>:
New bug report received and forwarded. Copy sent to bug-sed <at> gnu.org. (Wed, 18 Jun 2025 15:19:02 GMT) Full text and rfc822 format available.

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From: Szász Gergely <szaszg <at> hu.inter.net>
To: bug-sed <at> gnu.org
Subject: Performance bug with extended regex {i,j} range
Date: Wed, 18 Jun 2025 17:18:25 +0200

[Message part 1 (text/plain, inline)]
Hi,

> time echo -e 'first\nsecond\nthird' | sed -nre '/.{6,32767}/p'
second

real    1m45.403s 
user    1m40.283s
sys     0m5.118s

The same with pcre2 lib:
> time echo -e 'first\nsecond\nthird' | grep -P '.{6,32767}'
second

real    0m0.002s
user    0m0.000s
sys     0m0.002s

Best regards,
Gergely Szasz
[Message part 2 (text/html, inline)]
This bug report was last modified 8 days ago.

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