| |
| Version 1.9.6 (7 May 2003 or thereabouts) |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| Major changes in 1.9.6: |
| |
| - Improved threading support for glibc >= 2.3.2 (SuSE 8.2, |
| RedHat 9, to name but two ...) It turned out that 1.9.5 |
| had problems with threading support on glibc >= 2.3.2, |
| usually manifested by threaded programs deadlocking in system calls, |
| or running unbelievably slowly. Hopefully these are fixed now. 1.9.6 |
| is the first valgrind which gives reasonable support for |
| glibc-2.3.2. Also fixed a 2.3.2 problem with pthread_atfork(). |
| |
| - Majorly expanded FAQ.txt. We've added workarounds for all |
| common problems for which a workaround is known. |
| |
| Minor changes in 1.9.6: |
| |
| - Fix identification of the main thread's stack. Incorrect |
| identification of it was causing some on-stack addresses to not get |
| identified as such. This only affected the usefulness of some error |
| messages; the correctness of the checks made is unchanged. |
| |
| - Support for kernels >= 2.5.68. |
| |
| - Dummy implementations of __libc_current_sigrtmin, |
| __libc_current_sigrtmax and __libc_allocate_rtsig, hopefully |
| good enough to keep alive programs which previously died for lack of |
| them. |
| |
| - Fix bug in the VALGRIND_DISCARD_TRANSLATIONS client request. |
| |
| - Debug info reading: read symbols from both "symtab" and "dynsym" |
| sections, rather than merely from the one that comes last in the |
| file. |
| |
| - New syscall support: prctl(), creat(), lookup_dcookie(). |
| |
| - When checking calls to accept(), recvfrom(), getsocketopt(), |
| don't complain if buffer values are NULL. |
| |
| - Try and avoid assertion failures in |
| mash_LD_PRELOAD_and_LD_LIBRARY_PATH. |
| |
| - Minor bug fixes in cg_annotate. |
| |
| |
| |
| Version 1.9.5 (7 April 2003) |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| It occurs to me that it would be helpful for valgrind users to record |
| in the source distribution the changes in each release. So I now |
| attempt to mend my errant ways :-) Changes in this and future releases |
| will be documented in the NEWS file in the source distribution. |
| |
| Major changes in 1.9.5: |
| |
| - (Critical bug fix): Fix a bug in the FPU simulation. This was |
| causing some floating point conditional tests not to work right. |
| Several people reported this. If you had floating point code which |
| didn't work right on 1.9.1 to 1.9.4, it's worth trying 1.9.5. |
| |
| - Partial support for Red Hat 9. RH9 uses the new Native Posix |
| Threads Library (NPTL), instead of the older LinuxThreads. |
| This potentially causes problems with V which will take some |
| time to correct. In the meantime we have partially worked around |
| this, and so 1.9.5 works on RH9. Threaded programs still work, |
| but they may deadlock, because some system calls (accept, read, |
| write, etc) which should be nonblocking, in fact do block. This |
| is a known bug which we are looking into. |
| |
| If you can, your best bet (unfortunately) is to avoid using |
| 1.9.5 on a Red Hat 9 system, or on any NPTL-based distribution. |
| If your glibc is 2.3.1 or earlier, you're almost certainly OK. |
| |
| Minor changes in 1.9.5: |
| |
| - Added some #errors to valgrind.h to ensure people don't include |
| it accidentally in their sources. This is a change from 1.0.X |
| which was never properly documented. The right thing to include |
| is now memcheck.h. Some people reported problems and strange |
| behaviour when (incorrectly) including valgrind.h in code with |
| 1.9.1 -- 1.9.4. This is no longer possible. |
| |
| - Add some __extension__ bits and pieces so that gcc configured |
| for valgrind-checking compiles even with -Werror. If you |
| don't understand this, ignore it. Of interest to gcc developers |
| only. |
| |
| - Removed a pointless check which caused problems interworking |
| with Clearcase. V would complain about shared objects whose |
| names did not end ".so", and refuse to run. This is now fixed. |
| In fact it was fixed in 1.9.4 but not documented. |
| |
| - Fixed a bug causing an assertion failure of "waiters == 1" |
| somewhere in vg_scheduler.c, when running large threaded apps, |
| notably MySQL. |
| |
| - Add support for the munlock system call (124). |
| |
| Some comments about future releases: |
| |
| 1.9.5 is, we hope, the most stable Valgrind so far. It pretty much |
| supersedes the 1.0.X branch. If you are a valgrind packager, please |
| consider making 1.9.5 available to your users. You can regard the |
| 1.0.X branch as obsolete: 1.9.5 is stable and vastly superior. There |
| are no plans at all for further releases of the 1.0.X branch. |
| |
| If you want a leading-edge valgrind, consider building the cvs head |
| (from SourceForge), or getting a snapshot of it. Current cool stuff |
| going in includes MMX support (done); SSE/SSE2 support (in progress), |
| a significant (10-20%) performance improvement (done), and the usual |
| large collection of minor changes. Hopefully we will be able to |
| improve our NPTL support, but no promises. |
| |