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libjemalloc2-5.0.1-1.25 RPM for s390x

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Name: libjemalloc2 Distribution: SUSE Linux Enterprise 15
Version: 5.0.1 Vendor: SUSE LLC <>
Release: 1.25 Build date: Sat May 26 01:56:33 2018
Group: System/Libraries Build host: s390lp4
Size: 587816 Source RPM: jemalloc-5.0.1-1.25.src.rpm
Summary: General-purpose scalable concurrent malloc implementation
General-purpose scalable concurrent malloc(3) implementation.
This distribution is the stand-alone "portable" version of jemalloc.






* Wed Oct 04 2017
  - Add 0001-ARM-Don-t-extend-bit-LG_VADDR-to-compute-high-addres.patch:
    fixes #979.
* Tue Sep 12 2017
  - Add 0001-remove-CPU_SPINWAIT.patch:
    revert 701daa5298b3befe2aff05ce590533165abb9ba4 in order to fix #761.
* Tue Sep 12 2017
  - Update to version 5.0.1
    Bug fixes:
    * Update decay->nunpurged before purging, in order to avoid potential
      update races and subsequent incorrect purging volume.
    * Only abort on dlsym(3) error if the failure impacts an enabled
      feature (lazy locking and/or background threads). This mitigates an
      initialization failure bug for which we still do not have a clear
      reproduction test case. ([38]@interwq)
    * Modify tsd management so that it neither crashes nor leaks if a
      thread's only allocation activity is to call free() after TLS
      destructors have been executed. This behavior was observed when
      operating with GNU libc, and is unlikely to be an issue with other
      libc implementations. ([39]@interwq)
    * Mask signals during background thread creation. This prevents
      signals from being inadvertently delivered to background threads.
      ([40]@jasone, [41]@davidtgoldblatt, [42]@interwq)
    * Avoid inactivity checks within background threads, in order to
      prevent recursive mutex acquisition. ([43]@interwq)
    * Fix extent_grow_retained() to use the specified hooks when the
      arena.<i>.extent_hooks mallctl is used to override the default
      hooks. ([44]@interwq)
    * Add missing reentrancy support for custom extent hooks which
      allocate. ([45]@interwq)
    * Post-fork(2), re-initialize the list of tcaches associated with
      each arena to contain no tcaches except the forking thread's.
    * Add missing post-fork(2) mutex reinitialization for
      extent_grow_mtx. This fixes potential deadlocks after fork(2).
    * Enforce minimum autoconf version (currently 2.68), since 2.63 is
      known to generate corrupt configure scripts. ([48]@jasone)
    * Ensure that the configured page size (--with-lg-page) is no larger
      than the configured huge page size (--with-lg-hugepage).
    New features:
    * Implement optional per-CPU arena support; threads choose which
      arena to use based on current CPU rather than on fixed
      thread-->arena associations. ([59]@interwq)
    * Implement two-phase decay of unused dirty pages. Pages transition
      from dirty-->muzzy-->clean, where the first phase transition relies
      on madvise(... MADV_FREE) semantics, and the second phase
      transition discards pages such that they are replaced with
      demand-zeroed pages on next access. ([60]@jasone)
    * Increase decay time resolution from seconds to milliseconds.
    * Implement opt-in per CPU background threads, and use them for
      asynchronous decay-driven unused dirty page purging. ([62]@interwq)
    * Add mutex profiling, which collects a variety of statistics useful
      for diagnosing overhead/contention issues. ([63]@interwq)
    * Add C++ new/delete operator bindings. ([64]@djwatson)
    * Support manually created arena destruction, such that all data and
      metadata are discarded. Add MALLCTL_ARENAS_DESTROYED for accessing
      merged stats associated with destroyed arenas. ([65]@jasone)
    * Add MALLCTL_ARENAS_ALL as a fixed index for use in accessing
      merged/destroyed arena statistics via mallctl. ([66]@jasone)
    * Add opt.abort_conf to optionally abort if invalid configuration
      options are detected during initialization. ([67]@interwq)
    * Add opt.stats_print_opts, so that e.g. JSON output can be selected
      for the stats dumped during exit if opt.stats_print is true.
    * Add --with-version=VERSION for use when embedding jemalloc into
      another project's git repository. ([69]@jasone)
    * Add --disable-thp to support cross compiling. ([70]@jasone)
    * Add --with-lg-hugepage to support cross compiling. ([71]@jasone)
    * Add mallctl interfaces (various authors):
      + background_thread
      + opt.abort_conf
      + opt.retain
      + opt.percpu_arena
      + opt.background_thread
      + opt.{dirty,muzzy}_decay_ms
      + opt.stats_print_opts
      + arena.<i>.initialized
      + arena.<i>.destroy
      + arena.<i>.{dirty,muzzy}_decay_ms
      + arena.<i>.extent_hooks
      + arenas.{dirty,muzzy}_decay_ms
      + arenas.bin.<i>.slab_size
      + arenas.nlextents
      + arenas.lextent.<i>.size
      + arenas.create
      + stats.background_thread.{num_threads,num_runs,run_interval}
      + stats.mutexes.{ctl,background_thread,prof,reset}.{num_ops,num_
      + stats.arenas.<i>.{dirty,muzzy}_decay_ms
      + stats.arenas.<i>.uptime
      + stats.arenas.<i>.{pmuzzy,base,internal,resident}
      + stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
      + stats.arenas.<i>.bins.<j>.{nslabs,reslabs,curslabs}
      + stats.arenas.<i>.bins.<j>.mutex.{num_ops,num_spin_acq,num_wait
      + stats.arenas.<i>.lextents.<j>.{nmalloc,ndalloc,nrequests,curle
      + stats.arenas.i.mutexes.{large,extent_avail,extents_dirty,exten
    Portability improvements:
    * Improve reentrant allocation support, such that deadlock is less
      likely if e.g. a system library call in turn allocates memory.
      ([72]@davidtgoldblatt, [73]@interwq)
    * Support static linking of jemalloc with glibc. ([74]@djwatson)
    Optimizations and refactors:
    * Organize virtual memory as "extents" of virtual memory pages,
      rather than as naturally aligned "chunks", and store all metadata
      in arbitrarily distant locations. This reduces virtual memory
      external fragmentation, and will interact better with huge pages
      (not yet explicitly supported). ([75]@jasone)
    * Fold large and huge size classes together; only small and large
      size classes remain. ([76]@jasone)
    * Unify the allocation paths, and merge most fast-path branching
      decisions. ([77]@davidtgoldblatt, [78]@interwq)
    * Embed per thread automatic tcache into thread-specific data, which
      reduces conditional branches and dereferences. Also reorganize
      tcache to increase fast-path data locality. ([79]@interwq)
    * Rewrite atomics to closely model the C11 API, convert various
      synchronization from mutex-based to atomic, and use the explicit
      memory ordering control to resolve various hypothetical races
      without increasing synchronization overhead. ([80]@davidtgoldblatt)
    * Extensively optimize rtree via various methods:
      + Add multiple layers of rtree lookup caching, since rtree
      lookups are now part of fast-path deallocation. ([81]@interwq)
      + Determine rtree layout at compile time. ([82]@jasone)
      + Make the tree shallower for common configurations.
      + Embed the root node in the top-level rtree data structure,
      thus avoiding one level of indirection. ([84]@jasone)
      + Further specialize leaf elements as compared to internal node
      elements, and directly embed extent metadata needed for
      fast-path deallocation. ([85]@jasone)
      + Ignore leading always-zero address bits
      (architecture-specific). ([86]@jasone)
    * Reorganize headers (ongoing work) to make them hermetic, and
      disentangle various module dependencies. ([87]@davidtgoldblatt)
    * Convert various internal data structures such as size class
      metadata from boot-time-initialized to compile-time-initialized.
      Propagate resulting data structure simplifications, such as making
      arena metadata fixed-size. ([88]@jasone)
    * Simplify size class lookups when constrained to size classes that
      are multiples of the page size. This speeds lookups, but the
      primary benefit is complexity reduction in code that was the source
      of numerous regressions. ([89]@jasone)
    * Lock individual extents when possible for localized extent
      operations, rather than relying on a top-level arena lock.
      ([90]@davidtgoldblatt, [91]@jasone)
    * Use first fit layout policy instead of best fit, in order to
      improve packing. ([92]@jasone)
    * If munmap(2) is not in use, use an exponential series to grow each
      arena's virtual memory, so that the number of disjoint virtual
      memory mappings remains low. ([93]@jasone)
    * Implement per arena base allocators, so that arenas never share any
      virtual memory pages. ([94]@jasone)
    * Automatically generate private symbol name mangling macros.
    Incompatible changes:
    * Replace chunk hooks with an expanded/normalized set of extent
      hooks. ([96]@jasone)
    * Remove ratio-based purging. ([97]@jasone)
    * Remove --disable-tcache. ([98]@jasone)
    * Remove --disable-tls. ([99]@jasone)
    * Remove --enable-ivsalloc. ([100]@jasone)
    * Remove --with-lg-size-class-group. ([101]@jasone)
    * Remove --with-lg-tiny-min. ([102]@jasone)
    * Remove --disable-cc-silence. ([103]@jasone)
    * Remove --enable-code-coverage. ([104]@jasone)
    * Remove --disable-munmap (replaced by opt.retain). ([105]@jasone)
    * Remove Valgrind support. ([106]@jasone)
    * Remove quarantine support. ([107]@jasone)
    * Remove redzone support. ([108]@jasone)
    * Remove mallctl interfaces (various authors):
      + config.munmap
      + config.tcache
      + config.tls
      + config.valgrind
      + opt.lg_chunk
      + opt.purge
      + opt.lg_dirty_mult
      + opt.decay_time
      + opt.quarantine
      + opt.redzone
      + opt.thp
      + arena.<i>.lg_dirty_mult
      + arena.<i>.decay_time
      + arena.<i>.chunk_hooks
      + arenas.initialized
      + arenas.lg_dirty_mult
      + arenas.decay_time
      + arenas.bin.<i>.run_size
      + arenas.nlruns
      + arenas.lrun.<i>.size
      + arenas.nhchunks
      + arenas.hchunk.<i>.size
      + arenas.extend
      + stats.cactive
      + stats.arenas.<i>.lg_dirty_mult
      + stats.arenas.<i>.decay_time
      + stats.arenas.<i>.metadata.{mapped,allocated}
      + stats.arenas.<i>.{npurge,nmadvise,purged}
      + stats.arenas.<i>.huge.{allocated,nmalloc,ndalloc,nrequests}
      + stats.arenas.<i>.bins.<j>.{nruns,reruns,curruns}
      + stats.arenas.<i>.lruns.<j>.{nmalloc,ndalloc,nrequests,curruns}
      + stats.arenas.<i>.hchunks.<j>.{nmalloc,ndalloc,nrequests,curhch
    Bug fixes:
    * Improve interval-based profile dump triggering to dump only one
      profile when a single allocation's size exceeds the interval.
    * Use prefixed function names (as controlled by
    - -with-jemalloc-prefix) when pruning backtrace frames in jeprof.
* Fri Mar 10 2017
  - Update to version 4.5.0
    New features:
    * Add --disable-thp and the opt.thp mallctl to provide opt-out
      mechanisms for transparent huge page integration.
    * Restructure *CFLAGS configuration, so that CFLAGS behaves
      typically, and EXTRA_CFLAGS provides a way to specify e.g.
    - Werror during building, but not during configuration.
    Bug fixes:
    * Fix DSS (sbrk(2)-based) allocation. This regression was first
      released in 4.3.0.
    * Handle race in per size class utilization computation.
      This functionality was first released in 4.0.0.
    * Fix lock order reversal during gdump.
    * Fix/refactor tcache synchronization. This regression was
      first released in 4.0.0.
    * Fix various JSON-formatted malloc_stats_print() bugs.
      This functionality was first released in 4.3.0.
    * Fix huge-aligned allocation. This regression was first
      released in 4.4.0.
    * When transparent huge page integration is enabled, detect
      what state pages start in according to the kernel's current
      operating mode, and only convert arena chunks to non-huge
      during purging if that is not their initial state.
      This functionality was first released in 4.4.0.
    * Fix lg_chunk clamping for the --enable-cache-oblivious
    - -disable-fill case. This regression was first released
      in 4.0.0.
* Sun Dec 04 2016
  - Update to version 4.4.0
    * Add extent serial numbers and use them where appropriate as a
      sort key that is higher priority than address, so that the
      allocation policy prefers older extents. This tends to improve
      locality (decrease fragmentation) when memory grows downward.
    * Refactor madvise(2) configuration so that MADV_FREE is detected
      and utilized on Linux 4.5 and newer.
    * Mark partially purged arena chunks as non-huge-page.
      This improves interaction with Linux's transparent huge page
    Bug fixes:
    * Fix size class computations for edge conditions involving
      extremely large allocations. This regression was first
      released in 4.0.0.
    * Remove overly restrictive assertions related to the cactive
      statistic. This regression was first released in 4.1.0.
* Tue Nov 08 2016
  - Update to version 4.3.1
    * Fix a severe virtual memory leak. This regression was first
      released in 4.3.0.
* Sat Nov 05 2016
  - Update to version 4.3.0
    New features:
    * Add "J" (JSON) support to malloc_stats_print().
    * Add Cray compiler support.
    * Add/use adaptive spinning for bootstrapping and radix tree node
    * Fix large allocation to search starting in the optimal size
      class heap, which can substantially reduce virtual memory churn
      and fragmentation.  This regression was first released in 4.0.0.
    * Fix stats.arenas.<i>.nthreads accounting.
    * Fix and simplify decay-based purging.
    * Make DSS (sbrk(2)-related) operations lockless, which resolves
      potential deadlocks during thread exit.
    * Fix over-sized allocation of radix tree leaf nodes.
    * Fix over-sized allocation of arena_t (plus associated stats) data
    * Fix EXTRA_CFLAGS to not affect configuration.
    * Fix a Valgrind integration bug.
    * Disallow 0x5a junk filling when running in Valgrind.
    * Fix a file descriptor leak on Linux.  This regression was
      first released in 4.2.0.
    * Fix static linking of jemalloc with glibc.
    * Use syscall(2) rather than {open,read,close}(2) during boot on Linux.
      This works around other libraries' system call wrappers performing
      reentrant allocation.
    * Fix OS X default zone replacement to work with OS X 10.12.
    * Fix cached memory management to avoid needless commit/decommit
      operations during purging, which resolves permanent virtual
      memory map fragmentation issues on Windows.
    * Fix TSD fetches to avoid (recursive) allocation.  This is relevant to
      non-TLS and Windows configurations.
    * Fix malloc_conf overriding to work on Windows.
    * Forcibly disable lazy-lock on Windows (was forcibly *enabled*).
* Thu Jun 09 2016
  - Update to version 4.2.1
    * Fix bootstrapping issues for configurations that require
      allocation during tsd initialization (e.g. --disable-tls).
    * Fix gettimeofday() version of nstime_update().
    * Fix Valgrind regressions in calloc() and chunk_alloc_wrapper().
    * Fix potential VM map fragmentation regression.
    * Fix opt_zero-triggered in-place huge reallocation zeroing.
    * Fix heap profiling context leaks in reallocation edge cases.
* Fri May 13 2016
  - Update to version 4.2.0
    * Add the arena.<i>.reset mallctl, which makes it possible to
      discard all of an arena's allocations in a single operation.
    * Add the stats.retained and stats.arenas.<i>.retained statistics.
    * Add the --with-version configure option.
    * Support --with-lg-page values larger than actual page size.
    * Use pairing heaps rather than red-black trees for various hot
      data structures.
    * Streamline fast paths of rtree operations.
    * Optimize the fast paths of calloc() and [m,d,sd]allocx().
    * Decommit unused virtual memory if the OS does not overcommit.
    * Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active,
      in order to avoid unfortunate interactions during fork(2).
    * Fix chunk accounting related to triggering gdump profiles.
    * Link against librt for clock_gettime(2) if glibc < 2.17.
    * Scale leak report summary according to sampling probability.
* Wed May 04 2016
  - Update to version 4.1.1
    * Fix hashing functions to avoid unaligned memory accesses
      (and resulting crashes). This is relevant at least to some
      ARM-based platforms.
    * Fix fork()-related lock rank ordering reversals. These reversals
      were unlikely to cause deadlocks in practice except when heap
      profiling was enabled and active.
    * Fix various chunk leaks in OOM code paths.
    * Fix malloc_stats_print() to print opt.narenas correctly.
    * Fix a variety of test failures that were due to test fragility
      rather than core bugs.
  - Remove disable_oom_test.patch, fixed upstream.
  - Run testsuite in parallel where possible
* Wed Apr 20 2016
  - add disable_oom_test.patch
* Mon Feb 29 2016
  - Update to version 4.1.0
    New features:
    * Implement decay-based unused dirty page purging, a major optimization
      with mallctl API impact. This is an alternative to the existing ratio-based
      unused dirty page purging, and is intended to eventually become the sole
      purging mechanism. New mallctls:
      + opt.purge
      + opt.decay_time
      + arena.<i>.decay
      + arena.<i>.decay_time
      + arenas.decay_time
      + stats.arenas.<i>.decay_time
    * Add --with-malloc-conf, which makes it possible to embed a default options
      string during configuration. This was motivated by the desire to specify
    - -with-malloc-conf=purge:decay , since the default must remain purge:ratio
      until the 5.0.0 release.
    * Make *allocx() size class overflow behavior defined. The maximum size
      class is now less thanPTRDIFF_MAX to protect applications against numerical
      overflow, and all allocation functions are guaranteed to indicate errors
      rather than potentially crashing if the request size exceeds the maximum size class.
    * jeprof:
      + Add raw heap profile support.
      + Add --retain and --exclude for backtrace symbol filtering.
    * Optimize the fast path to combine various bootstrapping and configuration
      checks and execute more streamlined code in the common case.
    * Use linear scan for small bitmaps (used for small object tracking).
    In addition to speeding up bitmap operations on 64-bit systems, this reduces
    allocator metadata overhead by approximately 0.2%.
    * Separate arena_avail trees, which substantially speeds up run tree operations.
    * Use memoization (boot-time-computed table) for run quantization. Separate
      arena_avail trees reduced the importance of this optimization.
    * Attempt mmap-based in-place huge reallocation. This can dramatically speed up
      incremental huge reallocation.
    Incompatible changes:
    * Make opt.narenas unsigned rather than size_t.
    Bug fixes:
    * Fix stats.cactive accounting regression.
    * Handle unaligned keys in hash(). This caused problems for some ARM systems.
    * Refactor arenas array. In addition to fixing a fork-related deadlock,
      this makes arena lookups faster and simpler.
    * Move retained memory allocation out of the default chunk allocation function,
      to a location that gets executed even if the application installs a custom chunk
      allocation function. This resolves a virtual memory leak.
    * Fix a potential tsd cleanup leak.
    * Fix run quantization. In practice this bug had no impact unless applications
      requested memory with alignment exceeding one page.
    * Fix LinuxThreads-specific bootstrapping deadlock. (Cosmin Paraschiv)
    * jeprof:
      + Don't discard curl options if timeout is not defined. (@djwatson)
      + Detect failed profile fetches. (@djwatson)
    * Fix stats.arenas.<i>.{dss,lg_dirty_mult,decay_time,pactive,pdirty} for --disable-stats case.
* Sun Feb 14 2016
  - Fix build/test in SLE_11 by using gcc48
* Sat Oct 24 2015
  - Update to version 4.0.4
    * Fix xallocx(..., MALLOCX_ZERO to zero the last full trailing page
      of large allocations that have been randomly assigned an offset of
      0 when --enable-cache-oblivious configure option is enabled.
* Fri Sep 25 2015
  - Update to version 4.0.3
    * See included ChangeLog for complete changes.
* Mon Mar 31 2014
  - Update to 3.6.0
    * Fix a regression in arena_chunk_alloc() that caused crashes
      during small/large allocation if chunk allocation failed.
    * Fix backtracing for gcc intrinsics-based backtracing by specifying
    - fno-omit-frame-pointer to gcc.
    * Use dss allocation precedence for huge allocations as well as
      small/large allocations.
    * Testsuite fixes
  - Drop jemalloc-fix-backtracing.patch, merged upstream.
* Mon Mar 31 2014
  - Enable profiling
  - Add jemalloc-fix-backtracing.patch to fix profiling tests on x86
    (the failures were triggered due to profiling support.)
* Wed Feb 26 2014
  - Update to version 3.5.1
    * Fix junk filling for mremap(2)-based huge reallocation.
    * Unit test fixes
  - Remove jemalloc-fix-32bit-tests.patch, fixed upstream.
* Wed Jan 29 2014
  - Add jemalloc-fix-32bit-tests.patch to fix test failures on i586
* Fri Jan 24 2014
  - Update to version 3.5.0
    * Add the *allocx() API, which is a successor to the experimental *allocm()
      API.  The *allocx() functions are slightly simpler to use because they have
      fewer parameters, they directly return the results of primary interest, and
      mallocx()/rallocx() avoid the strict aliasing pitfall that
      allocm()/rallocx() share with posix_memalign().  Note that *allocm() is
      slated for removal in the next non-bugfix release.
    * Add support for LinuxThreads.
    * Unless heap profiling is enabled, disable floating point code and don't link
      with libm.  This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on x64
      systems, makes it possible to completely disable floating point register
      use.  Some versions of glibc neglect to save/restore caller-saved floating
      point registers during dynamic lazy symbol loading, and the symbol loading
      code uses whatever malloc the application happens to have linked/loaded
      with, the result being potential floating point register corruption.
    * Report ENOMEM rather than EINVAL if an OOM occurs during heap profiling
      backtrace creation in imemalign().  This bug impacted posix_memalign() and
    * Fix a file descriptor leak in a prof_dump_maps() error path.
    * Fix prof_dump() to close the dump file descriptor for all relevant error
    * Fix rallocm() to use the arena specified by the ALLOCM_ARENA(s) flag for
      allocation, not just deallocation.
    * Fix a data race for large allocation stats counters.
    * Fix a potential infinite loop during thread exit.  This bug occurred on
      Solaris, and could affect other platforms with similar pthreads TSD
    * Don't junk-fill reallocations unless usable size changes.  This fixes a
      violation of the *allocx()/*allocm() semantics.
    * Fix growing large reallocation to junk fill new space.
    * Fix huge deallocation to junk fill when munmap is disabled.
    * Change the default private namespace prefix from empty to je_, and change
    - -with-private-namespace-prefix so that it prepends an additional prefix
      rather than replacing je_.  This reduces the likelihood of applications
      which statically link jemalloc experiencing symbol name collisions.
    * Add missing private namespace mangling (relevant when
    - -with-private-namespace is specified).
    * Add and use JEMALLOC_INLINE_C so that static inline functions are marked as
      static even for debug builds.
    * Add a missing mutex unlock in a malloc_init_hard() error path.  In practice
      this error path is never executed.
    * Fix numerous bugs in malloc_strotumax() error handling/reporting.  These
      bugs had no impact except for malformed inputs.
    * Fix numerous bugs in malloc_snprintf().  These bugs were not exercised by
      existing calls, so they had no impact.
* Tue Oct 22 2013
  - Update to version 3.4.1
    * Fix a race in the "arenas.extend" mallctl that could cause memory
      corruption of internal data structures and subsequent crashes.
    * Fix Valgrind integration flaws that caused Valgrind warnings about
      reads of uninitialized memory in:
      + arena chunk headers
      + internal zero-initialized data structures
    * Preserve errno during the first allocation.  A readlink(2) call
      during initialization fails unless /etc/malloc.conf exists,
      so errno was typically set during the first allocation prior to this fix.
    * Fix compilation warnings reported by gcc 4.8.1
* Thu Jun 06 2013
  - Rename pprof to pprof-jemalloc to prevent conflict with gperftools
* Wed Jun 05 2013
  - Update to version 3.4.0
    * Support for aarch64
    * Fix race-triggered deadlocks in chunk_record()
* Thu Mar 07 2013
  - Update to version 3.3.1
    * Fix a locking order bug that could cause deadlock during fork
      if heap profiling were enabled.
    * Fix a chunk recycling bug that could cause the allocator to lose
      track of whether a chunk was zeroed.
    * Fix TLS-related memory corruption that could occur during thread
      exit if the thread never allocated memory.  Only the quarantine
      and prof facilities were susceptible.
    * Internal reallocation of the quarantined object array leaked
      the old array.
    * Reallocation failure for internal reallocation of the quarantined
      object array (very unlikely) resulted in memory corruption.
    * Fix Valgrind integration to annotate all internally allocated
      memory in a way that keeps Valgrind happy about internal data
      structure access.
    * Fix building for s390 systems.
  - Implement %check
* Thu Jan 24 2013
  - Update to version 3.3.0
    * Add clipping support to lg_chunk option processing.
    * Add the --enable-ivsalloc option.
    * Add the --without-export option.
    * Add the --disable-zone-allocator option.
    * Fix "arenas.extend" mallctl to output the number of arenas.
    * Fix chunk_recycyle() to unconditionally inform Valgrind that
      returned memory is undefined.
    * Fix build break on FreeBSD related to alloca.h.
* Wed Nov 14 2012
  - Update to new upstream release 3.2.0
    * Fix deadlock in the "arenas.purge" mallctl.
  - Update to new upstream release 3.1.0
    * Auto-detect whether running inside Valgrind, thus removing the
    need to manually specify MALLOC_CONF=valgrind:true.
    * Disable tcache by default if running inside Valgrind, in order to
    avoid making unallocated objects appear reachable to Valgrind.
    * Fix heap profiling crash if sampled object is freed via realloc(p, 0).
* Tue Sep 04 2012
  - Update to new upstream release 3.0.0
    * Implement Valgrind support, redzones, and quarantine.
    * Add support for additional architectures: MIPS, SH4, Tilera
    * Add nallocm(), which rounds a request size up to the nearest size
    class without actually allocating.
    * Implement aligned_alloc()
    * Add the "thread.tcache.enabled" and "opt.prof_final" mallctls.
    * Update pprof (from gperftools 2.0).
    * (For more, see the ChangeLog file in this RPM package.)
* Thu Oct 13 2011
  - Add a patch to generate during configure
* Wed Oct 12 2011
  - Initial package (version 2.2.3) for



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