[Bug regex/13762] New: re_search etc. should return -2 on memory exhaustion

[Bug regex/13762] New: re_search etc. should return -2 on memory exhaustion

[eggert at gnu dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13762

             Bug #: 13762
           Summary: re_search etc. should return -2 on memory exhaustion
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: regex
        AssignedTo: unassigned@sourceware.org
        ReportedBy: eggert@gnu.org
                CC: drepper.fsp@gmail.com
    Classification: Unclassified


Created attachment 6249
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6249
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.

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[Bug regex/13762] re_search etc. should return -2 on memory exhaustion

[neleai at seznam dot cz]

https://sourceware.org/bugzilla/show_bug.cgi?id=13762

Ondrej Bilka <neleai at seznam dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |neleai at seznam dot cz

--- Comment #1 from Ondrej Bilka <neleai at seznam dot cz> ---
Could you send this to libc-alpha?

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[Bug regex/13762] re_search etc. should return -2 on memory exhaustion

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=13762

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING
                 CC|                            |fweimer at redhat dot com
              Flags|                            |security-

--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Ondrej Bilka from comment #1)
> Could you send this to libc-alpha?

Seconded.

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