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Re: lib/54050: malloc_usable_size() is provided on recent NetBSD-current, however malloc.h has no prototype



The following reply was made to PR lib/54050; it has been noted by GNATS.

From: Kamil Rytarowski <n54%gmx.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: lib/54050: malloc_usable_size() is provided on recent
 NetBSD-current, however malloc.h has no prototype
Date: Tue, 12 Mar 2019 13:35:20 +0100

 On 09.03.2019 19:55, Joerg Sonnenberger wrote:
 > The following reply was made to PR lib/54050; it has been noted by GNATS.
 > 
 > From: Joerg Sonnenberger <joerg%bec.de@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: lib-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 > 	netbsd-bugs%netbsd.org@localhost
 > Subject: Re: lib/54050: malloc_usable_size() is provided on recent
 >  NetBSD-current, however malloc.h has no prototype
 > Date: Sat, 9 Mar 2019 19:52:02 +0100
 > 
 >  On Sat, Mar 09, 2019 at 03:40:00AM +0000, ryoon%NetBSD.org@localhost wrote:
 >  > >Description:
 >  > It seems that recent NetBSD-current with jemalloc provides
 >  > malloc_usable_size(), however /usr/include/malloc.h has
 >  > no prototype definition.
 >  > 
 >  > This inconsistency breaks a build of pkgsrc/www/firefox-65.0.2nb1.
 >  
 >  I would actually very much prefer to go the reverse direction and do
 >  *not* expose the various statistic intefaces at all. They are a cancer
 >  that just tie libc down to a specific malloc implementation.
 >  Applications have no reason for demanding this stuff.
 >  
 >  Joerg
 >  
 > 
 
 I disagree, I do find the statistics API useful for part of external
 software. At some point of time this API would allow me to port an
 additional software at all as test-suite required mallctl interfaces to
 validate the code (LLVM scudo hardened allocator).
 


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