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e4e26210c3
glibc/malloc
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Stefan Liebler e4e26210c3 Fix failing test malloc/tst-interpose-nothread with GCC 7. 
The test malloc/tst-interpose-nothread fails on s390x if built
with GCC 7 and glibc commit "Remove the str(n)dup inlines
from string/bits/string2.h. Although inlining"
(ae65d4f3c3) with output:
error: free: 0x3fffdffa010: invalid allocation index: 0 (not less than 0)

The destructor check_for_allocations in malloc/tst-interpose-aux.c is
called twice.  One time after the test-child-process has finished successfully
and once after the test-parent-process finishes.
During the latter invocation, allocation_index == 0.  GCC 7 is now inlining the
free function and calls unconditionally fail in get_header as
header->allocation_index (type == size_t) is always >= allocation_index (= 0).
Before the mentioned commit above, strdup was replaced by strlen, malloc and
memcpy.  The malloc call was also inlined and allocation_index was set to one.

This patch moves the already existing compiler barrier before the invocation
of free.

ChangeLog:

	* malloc/tst-interpose-aux.c (check_for_allocations):
	Move compiler barrier before free.
2017-03-21 16:41:56 +01:00
..
arena.c Fix getting tunable values on big-endian (BZ #21109) 2017-02-08 14:17:17 +05:30
Depend Update. 1999-10-04 22:59:43 +00:00
hooks.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Makefile malloc: Run tunables tests only if tunables are enabled 2017-01-01 09:27:03 +01:00
malloc-hooks.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
malloc-internal.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
malloc.c Further harden glibc malloc metadata against 1-byte overflows. 2017-03-17 15:31:38 -04:00
malloc.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mallocbug.c Reformat malloc to gnu style. 2014-01-02 09:40:10 +01:00
mcheck-init.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mcheck.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mcheck.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memusage.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memusage.sh Update copyright dates not handled by scripts/update-copyrights. 2017-01-01 00:26:24 +00:00
memusagestat.c Update copyright dates not handled by scripts/update-copyrights. 2017-01-01 00:26:24 +00:00
morecore.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mtrace.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mtrace.pl Update copyright dates not handled by scripts/update-copyrights. 2017-01-01 00:26:24 +00:00
obstack.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
obstack.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
scratch_buffer_grow_preserve.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
scratch_buffer_grow.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
scratch_buffer_set_array_size.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
set-freeres.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
thread-freeres.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-calloc.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-aux-nothread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-aux-thread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-aux.c Fix failing test malloc/tst-interpose-nothread with GCC 7. 2017-03-21 16:41:56 +01:00
tst-interpose-aux.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-nothread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-skeleton.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-static-nothread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-static-thread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-interpose-thread.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-malloc-backtrace.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-malloc-fork-deadlock.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-malloc-thread-exit.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-malloc-thread-fail.c Increase some test timeouts. 2017-01-05 17:39:38 +00:00
tst-malloc-usable-static-tunables.c Initialize tunable list with the GLIBC_TUNABLES environment variable 2016-12-31 23:49:24 +05:30
tst-malloc-usable-static.c Add framework for tunables 2016-12-31 23:49:24 +05:30
tst-malloc-usable-tunables.c Initialize tunable list with the GLIBC_TUNABLES environment variable 2016-12-31 23:49:24 +05:30
tst-malloc-usable.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-malloc.c Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
tst-mallocfork2.c Increase some test timeouts. 2017-01-05 17:39:38 +00:00
tst-mallocfork.c * malloc/tst-mallocfork.c (do_test): Make sure sa_flags is 2005-12-06 00:50:15 +00:00
tst-mallocstate.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-mallopt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-mcheck.c Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
tst-memalign.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-mtrace.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-mtrace.sh Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-obstack.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-posix_memalign.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-pvalloc.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-realloc.c Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
tst-scratch_buffer.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tst-trim1.c * malloc/tst-trim1.c: New file. 2007-12-16 22:57:57 +00:00
tst-valloc.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Versions Add struct scratch_buffer and its internal helper functions 2015-04-07 11:03:43 +02:00