[Valgrind-announce] Valgrind-3.7.0 is available

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

We are pleased to announce a new release of Valgrind, version 3.7.0,
available from http://www.valgrind.org.

Valgrind is an open-source suite of simulation based debugging and
profiling tools.  With the tools that come with Valgrind, you can
automatically detect many memory management and threading bugs, which
avoids hours of frustrating bug-hunting, and makes your code more
stable.  You can also perform detailed time and space profiling to
help speed up and slim down your programs.

3.7.0 is a feature release with many significant improvements and the
usual collection of bug fixes. This release adds support for
ARM/Android, S390X/Linux and Mac OS X 10.7 (Lion).  A GDB server has
been added, so you can now control your application from inside GDB
whilst it runs on Valgrind.  There have been performance and
functionality improvements for the following tools: Helgrind, DRD,
Memcheck and exp-Ptrcheck.

This release supports X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,
PPC64/Linux, S390X/Valgrind, ARM/Android (2.3.x), X86/Darwin and
AMD64/Darwin (Mac OS X 10.6 and 10.7).

Our thanks to all those who contribute to Valgrind's development.
This release represents a great deal of time, energy and effort on the
part of many people.

Happy (and productive) debugging and profiling,

-- The Valgrind Developers

Release 3.7.0 (5 November 2011)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.7.0 is a feature release with many significant improvements and the
usual collection of bug fixes.

This release supports X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,
PPC64/Linux, S390X/Linux, ARM/Android, X86/Darwin and AMD64/Darwin.
Support for recent distros and toolchain components (glibc 2.14, gcc
4.6, MacOSX 10.7) has been added.

* ================== PLATFORM CHANGES =================

* Support for IBM z/Architecture (s390x) running Linux.  Valgrind can
  analyse 64-bit programs running on z/Architecture.  Most user space
  instructions up to and including z10 are supported.  Valgrind has
  been tested extensively on z9, z10, and z196 machines running SLES
  10/11, RedHat 5/6m, and Fedora. The Memcheck and Massif tools are
  known to work well. Callgrind, Helgrind, and DRD work reasonably
  well on z9 and later models. See README.s390 for more details.

* Preliminary support for MacOSX 10.7 and XCode 4.  Both 32- and
  64-bit processes are supported.  Some complex threaded applications
  (Firefox) are observed to hang when run as 32 bit applications,
  whereas 64-bit versions run OK.  The cause is unknown.  Memcheck
  will likely report some false errors.  In general, expect some rough
  spots.  This release also supports MacOSX 10.6, but drops support
  for 10.5.

* Preliminary support for Android (on ARM).  Valgrind can now run
  large applications (eg, Firefox) on (eg) a Samsung Nexus S.  See
  README.android for more details, plus instructions on how to get
  started.

* Support for the IBM Power ISA 2.06 (Power7 instructions)

* General correctness and performance improvements for ARM/Linux, and,
  by extension, ARM/Android.

* Further solidification of support for SSE 4.2 in 64-bit mode.  AVX
  instruction set support is under development but is not available in
  this release.

* Support for AIX5 has been removed.

* ==================== TOOL CHANGES ====================

* Memcheck: some incremental changes:

  - reduction of memory use in some circumstances

  - improved handling of freed memory, which in some circumstances 
    can cause detection of use-after-free that would previously have
    been missed

  - fix of a longstanding bug that could cause false negatives (missed
    errors) in programs doing vector saturated narrowing instructions.

* Helgrind: performance improvements and major memory use reductions,
  particularly for large, long running applications which perform many
  synchronisation (lock, unlock, etc) events.  Plus many smaller
  changes:

  - display of locksets for both threads involved in a race

  - general improvements in formatting/clarity of error messages

  - addition of facilities and documentation regarding annotation
    of thread safe reference counted C++ classes

  - new flag --check-stack-refs=no|yes [yes], to disable race checking
    on thread stacks (a performance hack)

  - new flag --free-is-write=no|yes [no], to enable detection of races
    where one thread accesses heap memory but another one frees it,
    without any coordinating synchronisation event

* DRD: enabled XML output; added support for delayed thread deletion
  in order to detect races that occur close to the end of a thread
  (--join-list-vol); fixed a memory leak triggered by repeated client
  memory allocatation and deallocation; improved Darwin support.

* exp-ptrcheck: this tool has been reduced in scope so as to improve
  performance and remove checking that Memcheck does better.
  Specifically, the ability to check for overruns for stack and global
  arrays is unchanged, but the ability to check for overruns of heap
  blocks has been removed.  The tool has accordingly been renamed to
  exp-sgcheck ("Stack and Global Array Checking").

* ==================== OTHER CHANGES ====================

* GDB server: Valgrind now has an embedded GDB server.  That means it
  is possible to control a Valgrind run from GDB, doing all the usual
  things that GDB can do (single stepping, breakpoints, examining
  data, etc).  Tool-specific functionality is also available.  For
  example, it is possible to query the definedness state of variables
  or memory from within GDB when running Memcheck; arbitrarily large
  memory watchpoints are supported, etc.  To use the GDB server, start
  Valgrind with the flag --vgdb-error=0 and follow the on-screen
  instructions.

* Improved support for unfriendly self-modifying code: a new option
  --smc-check=all-non-file is available.  This adds the relevant
  consistency checks only to code that originates in non-file-backed
  mappings.  In effect this confines the consistency checking only to
  code that is or might be JIT generated, and avoids checks on code
  that must have been compiled ahead of time.  This significantly
  improves performance on applications that generate code at run time.

* It is now possible to build a working Valgrind using Clang-2.9 on
  Linux.

* new client requests VALGRIND_{DISABLE,ENABLE}_ERROR_REPORTING.
  These enable and disable error reporting on a per-thread, and
  nestable, basis.  This is useful for hiding errors in particularly
  troublesome pieces of code.  The MPI wrapper library (libmpiwrap.c)
  now uses this facility.

* Added the --mod-funcname option to cg_diff.

* ==================== FIXED BUGS ====================

The following bugs have been fixed or resolved.  Note that "n-i-bz"
stands for "not in bugzilla" -- that is, a bug that was reported to us
but never got a bugzilla entry.  We encourage you to file bugs in
bugzilla (http://bugs.kde.org/enter_valgrind_bug.cgi) rather than
mailing the developers (or mailing lists) directly -- bugs that are
not entered into bugzilla tend to get forgotten about or ignored.

To see details of a given bug, visit
https://bugs.kde.org/show_bug.cgi?id=XXXXXX
where XXXXXX is the bug number as listed below.

210935  port valgrind.h (not valgrind) to win32 to support client requests
214223  valgrind SIGSEGV on startup gcc 4.4.1 ppc32 (G4) Ubuntu 9.10
243404  Port to zSeries
243935  Helgrind: incorrect handling of ANNOTATE_HAPPENS_BEFORE()/AFTER()
247223  non-x86: Suppress warning: 'regparm' attribute directive ignored
250101  huge "free" memory usage due to m_mallocfree.c fragmentation
253206  Some fixes for the faultstatus testcase
255223  capget testcase fails when running as root
256703  xlc_dbl_u32.c testcase broken
256726  Helgrind tests have broken inline asm 
259977  == 214223 (Valgrind segfaults doing __builtin_longjmp)
264800  testcase compile failure on zseries
265762  make public VEX headers compilable by G++ 3.x
265771  assertion in jumps.c (r11523) fails with glibc-2.3
266753  configure script does not give the user the option to not use QtCore
266931  gen_insn_test.pl is broken
266961  ld-linux.so.2 i?86-linux strlen issues
266990  setns instruction causes false positive
267020  Make directory for temporary files configurable at run-time.
267342  == 267997 (segmentation fault on Mac OS 10.6)
267383  Assertion 'vgPlain_strlen(dir) + vgPlain_strlen(file) + 1 < 256' 
failed
267413  Assertion 'DRD_(g_threadinfo)[tid].synchr_nesting >= 1' failed.
267488  regtest: darwin support for 64-bit build
267552  SIGSEGV (misaligned_stack_error) with DRD, but not with other tools
267630  Add support for IBM Power ISA 2.06 -- stage 1
267769  == 267997 (Darwin: memcheck triggers segmentation fault)
267819  Add client request for informing the core about reallocation
267925  laog data structure quadratic for a single sequence of lock
267968  drd: (vgDrd_thread_set_joinable): Assertion '0 <= (int)tid ..' failed
267997  MacOSX: 64-bit V segfaults on launch when built with Xcode 4.0.1
268513  missed optimizations in fold_Expr
268619  s390x: fpr - gpr transfer facility 
268620  s390x: reconsider "long displacement" requirement 
268621  s390x: improve IR generation for XC
268715  s390x: FLOGR is not universally available
268792  == 267997 (valgrind seg faults on startup when compiled with Xcode 4)
268930  s390x: MHY is not universally available
269078  arm->IR: unhandled instruction SUB (SP minus immediate/register) 
269079  Support ptrace system call on ARM
269144  missing "Bad option" error message
269209  conditional load and store facility (z196)
269354  Shift by zero on x86 can incorrectly clobber CC_NDEP
269641  == 267997 (valgrind segfaults immediately (segmentation fault))
269736  s390x: minor code generation tweaks
269778  == 272986 (valgrind.h: swap roles of VALGRIND_DO_CLIENT_REQUEST() ..)
269863  s390x: remove unused function parameters
269864  s390x: tweak s390_emit_load_cc 
269884  == 250101 (overhead for huge blocks exhausts space too soon)
270082  s390x: Make sure to point the PSW address to the next address on 
SIGILL
270115  s390x: rewrite some testcases
270309  == 267997 (valgrind crash on startup)
270320  add support for Linux FIOQSIZE ioctl() call
270326  segfault while trying to sanitize the environment passed to execle
270794  IBM POWER7 support patch causes regression in none/tests
270851  IBM POWER7 fcfidus instruction causes memcheck to fail
270856  IBM POWER7 xsnmaddadp instruction causes memcheck to fail on 32bit app 
270925  hyper-optimized strspn() in /lib64/libc-2.13.so needs fix
270959  s390x: invalid use of R0 as base register
271042  VSX configure check fails when it should not 
271043  Valgrind build fails with assembler error on ppc64 with binutils 2.21 
271259  s390x: fix code confusion 
271337  == 267997 (Valgrind segfaults on MacOS X)
271385  s390x: Implement Ist_MBE 
271501  s390x: misc cleanups 
271504  s390x: promote likely and unlikely 
271579  ppc: using wrong enum type 
271615  unhandled instruction "popcnt" (arch=amd10h) 
271730  Fix bug when checking ioctls: duplicate check 
271776  s390x: provide STFLE instruction support 
271779  s390x: provide clock instructions like STCK 
271799  Darwin: ioctls without an arg report a memory error 
271820  arm: fix type confusion 
271917  pthread_cond_timedwait failure leads to not-locked false positive 
272067  s390x: fix DISP20 macro 
272615  A typo in debug output in mc_leakcheck.c
272661  callgrind_annotate chokes when run from paths containing regex chars
272893  amd64->IR: 0x66 0xF 0x38 0x2B 0xC1 0x66 0xF 0x7F == (closed as dup)
272955  Unhandled syscall error for pwrite64 on ppc64 arch 
272967  make documentation build-system more robust 
272986  Fix gcc-4.6 warnings with valgrind.h
273318  amd64->IR: 0x66 0xF 0x3A 0x61 0xC1 0x38 (missing PCMPxSTRx case)
273318  unhandled PCMPxSTRx case: vex amd64->IR: 0x66 0xF 0x3A 0x61 0xC1 0x38 
273431  valgrind segfaults in evalCfiExpr (debuginfo.c:2039)
273465  Callgrind: jumps.c:164 (new_jcc): Assertion '(0 <= jmp) && ...'
273536  Build error: multiple definition of `vgDrd_pthread_cond_initializer'
273640  ppc64-linux: unhandled syscalls setresuid(164) and setresgid(169)
273729  == 283000 (Illegal opcode for SSE2 "roundsd" instruction)
273778  exp-ptrcheck: unhandled sysno == 259
274089  exp-ptrcheck: unhandled sysno == 208
274378  s390x: Various dispatcher tweaks
274447  WARNING: unhandled syscall: 340
274776  amd64->IR: 0x66 0xF 0x38 0x2B 0xC5 0x66
274784  == 267997 (valgrind ls -l results in Segmentation Fault)
274926  valgrind does not build against linux-3
275148  configure FAIL with glibc-2.14
275151  Fedora 15 / glibc-2.14 'make regtest' FAIL
275168  Make Valgrind work for MacOSX 10.7 Lion
275212  == 275284 (lots of false positives from __memcpy_ssse3_back et al)
275278  valgrind does not build on Linux kernel 3.0.* due to silly
275284  Valgrind memcpy/memmove redirection stopped working in glibc 
2.14/x86_64
275308  Fix implementation for ppc64 fres instruc
275339  s390x: fix testcase compile warnings
275517  s390x: Provide support for CKSM instruction
275710  s390x: get rid of redundant address mode calculation
275815  == 247894 (Valgrind doesn't know about Linux readahead(2) syscall)
275852  == 250101 (valgrind uses all swap space and is killed)
276784  Add support for IBM Power ISA 2.06 -- stage 3
276987  gdbsrv: fix tests following recent commits
277045  Valgrind crashes with  unhandled DW_OP_ opcode 0x2a
277199  The test_isa_2_06_part1.c in none/tests/ppc64 should be a symlink
277471  Unhandled syscall: 340
277610  valgrind crashes in VG_(lseek)(core_fd, phdrs[idx].p_offset, ...)
277653  ARM: support Thumb2 PLD instruction
277663  ARM: NEON float VMUL by scalar incorrect
277689  ARM: tests for VSTn with register post-index are broken
277694  ARM: BLX LR instruction broken in ARM mode
277780  ARM: VMOV.F32 (immediate) instruction is broken
278057  fuse filesystem syscall deadlocks
278078  Unimplemented syscall 280 on ppc32
278349  F_GETPIPE_SZ and  F_SETPIPE_SZ Linux fcntl commands
278454  VALGRIND_STACK_DEREGISTER has wrong output type
278502  == 275284 (Valgrind confuses memcpy() and memmove())
278892  gdbsrv: factorize gdb version handling, fix doc and typos
279027  Support for MVCL and CLCL instruction
279027  s390x: Provide support for CLCL and MVCL instructions
279062  Remove a redundant check in the insn selector for ppc.
279071  JDK creates PTEST with redundant REX.W prefix
279212  gdbsrv: add monitor cmd v.info scheduler.
279378  exp-ptrcheck: the 'impossible' happened on mkfifo call
279698  memcheck discards valid-bits for packuswb
279795  memcheck reports uninitialised values for mincore on amd64
279994  Add support for IBM Power ISA 2.06 -- stage 3
280083  mempolicy syscall check errors
280290  vex amd64->IR: 0x66 0xF 0x38 0x28 0xC1 0x66 0xF 0x6F
280710  s390x: config files for nightly builds
280757  /tmp dir still used by valgrind even if TMPDIR is specified
280965  Valgrind breaks fcntl locks when program does mmap
281138  WARNING: unhandled syscall: 340
281241  == 275168 (valgrind useless on Macos 10.7.1 Lion)
281304  == 275168 (Darwin: dyld "cannot load inserted library")
281305  == 275168 (unhandled syscall: unix:357 on Darwin 11.1)
281468  s390x: handle do_clone and gcc clones in call traces
281488  ARM: VFP register corruption
281828  == 275284 (false memmove warning: "Source and destination overlap")
281883  s390x: Fix system call wrapper for "clone".
282105  generalise 'reclaimSuperBlock' to also reclaim splittable superblock
282112  Unhandled instruction bytes: 0xDE 0xD9 0x9B 0xDF (fcompp)
282238  SLES10: make check fails
282979  strcasestr needs replacement with recent(>=2.12) glibc
283000  vex amd64->IR: 0x66 0xF 0x3A 0xA 0xC0 0x9 0xF3 0xF
283243  Regression in ppc64 memcheck tests
283325  == 267997 (Darwin: V segfaults on startup when built with Xcode 4.0)
283427  re-connect epoll_pwait syscall on ARM linux
283600  gdbsrv: android: port vgdb.c
283709  none/tests/faultstatus needs to account for page size
284305  filter_gdb needs enhancement to work on ppc64
284384  clang 3.1 -Wunused-value warnings in valgrind.h, memcheck.h
284472  Thumb2 ROR.W encoding T2 not implemented
284621  XML-escape process command line in XML output
n-i-bz  cachegrind/callgrind: handle CPUID information for Core iX Intel CPUs
        that have non-power-of-2 sizes (also AMDs)
n-i-bz  don't be spooked by libraries mashed by elfhack
n-i-bz  don't be spooked by libxul.so linked with gold
n-i-bz  improved checking for VALGRIND_CHECK_MEM_IS_DEFINED

(3.7.0-TEST1: 27  October 2011, vex r2228, valgrind r12245)
(3.7.0.RC1:    1 November 2011, vex r2231, valgrind r12257)
(3.7.0:        5 November 2011, vex r2231, valgrind r12258)