Bug 13762 – re_search etc. should return -2 on memory exhaustion

Bug 13762 - re_search etc. should return -2 on memory exhaustion


Summary:	re_search etc. should return -2 on memory exhaustion

Status:	NEW

Product:	glibc
Classification:	Unclassified
Component:	regex
Version:	unspecified

Importance:	P2 normal
Target Milestone:	---
Assigned To:	Not yet assigned to anyone

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Depends on:
Blocks:
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Reported:	2012-02-27 07:06 UTC by Paul Eggert
Modified:	2012-02-27 07:06 UTC (History)
CC List:	1 user (show)

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Attachments
Fix re_search to return -2 on memory exhaustion. (615 bytes, text/plain) 2012-02-27 07:06 UTC, Paul Eggert	Details
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Description Paul Eggert 2012-02-27 07:06:59 UTC

Created attachment 6249 [details]
Fix re_search to return -2 on memory exhaustion.

I ran into this problem when testing GNU grep, which uses
the re_search function.  re_search is supposed to return -2
on internal error, but it returns -1 in some cases when
memory is exhausted.  -1 simply means "no match", so this
causes grep to falsely claim "no match" when it should have
reported an error due to memory exhaustion.

I'm attaching a patch against the current git master.