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[Bug malloc/20432] malloc: Minimize interface required for interposition
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 26 Aug 2016 21:31:04 +0000
- Subject: [Bug malloc/20432] malloc: Minimize interface required for interposition
- Auto-submitted: auto-generated
- References: <bug-20432-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20432
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ef4f97648dc95849e417dd3e6328165de4c22185
commit ef4f97648dc95849e417dd3e6328165de4c22185
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Aug 26 22:40:27 2016 +0200
malloc: Simplify static malloc interposition [BZ #20432]
Existing interposed mallocs do not define the glibc-internal
fork callbacks (and they should not), so statically interposed
mallocs lead to link failures because the strong reference from
fork pulls in glibc's malloc, resulting in multiple definitions
of malloc-related symbols.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 34 ++++
include/libc-symbols.h | 15 ++
malloc/Makefile | 27 +++-
malloc/tst-interpose-aux-nothread.c | 20 +++
malloc/tst-interpose-aux-thread.c | 20 +++
malloc/tst-interpose-aux.c | 270 ++++++++++++++++++++++++++++++++
malloc/tst-interpose-aux.h | 30 ++++
malloc/tst-interpose-nothread.c | 20 +++
malloc/tst-interpose-skeleton.c | 204 ++++++++++++++++++++++++
malloc/tst-interpose-static-nothread.c | 19 +++
malloc/tst-interpose-static-thread.c | 19 +++
malloc/tst-interpose-thread.c | 20 +++
nptl/tst-tls3-malloc.c | 156 +------------------
sysdeps/mach/hurd/fork.c | 6 +-
sysdeps/nptl/fork.c | 6 +-
15 files changed, 706 insertions(+), 160 deletions(-)
create mode 100644 malloc/tst-interpose-aux-nothread.c
create mode 100644 malloc/tst-interpose-aux-thread.c
create mode 100644 malloc/tst-interpose-aux.c
create mode 100644 malloc/tst-interpose-aux.h
create mode 100644 malloc/tst-interpose-nothread.c
create mode 100644 malloc/tst-interpose-skeleton.c
create mode 100644 malloc/tst-interpose-static-nothread.c
create mode 100644 malloc/tst-interpose-static-thread.c
create mode 100644 malloc/tst-interpose-thread.c
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