-------- Original Message -------- Subject: GCC 4.3.0 Released Date: Mon, 10 Mar 2008 06:21:34 -0400 From: Jakub Jelinek jakub@redhat.com Reply-To: Jakub Jelinek jakub@redhat.com To: gcc-announce@gcc.gnu.org

GCC 4.3.0 has been released.

GCC 4.3.0 is a major release, containing substantial new functionality not available in GCC 4.2.x or previous GCC releases.

See:

http://gcc.gnu.org/gcc-4.3/changes.html

for more information about changes in GCC 4.3.0.

This release is available from the FTP servers listed here:

http://www.gnu.org/order/ftp.html

The release is in gcc/gcc-4.3.0/ subdirectory.

There is one important caveat. It was discovered after the final release has been made that some OS kernels on i?86 and x86_64 architectures violate the processor specific ABI with regards to the DF flag, if a process is interrupted with a signal while doing overlapping memmove or running some other code with DF flag set, the signal handler might be started with DF flag set on entry to the signal handler. GCC 4.3.0 no longer emits cld instructions unnecessarily, so GCC 4.3.0 compiled async signal handlers or functions the signal handlers call that rely on DF flag being cleared might misbehave. This will be hopefully fixed in the kernels soon and future GCC releases might provide an optional workaround for this bug. Fixes for some systems: Linux http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdif... FreeBSD http://www.freebsd.org/cgi/query-pr.cgi?pr=121422 Hurd http://sources.redhat.com/ml/libc-alpha/2008-03/msg00020.html

If you encounter difficulties using GCC 4.3, please do not contact me directly. Instead, please visit http://gcc.gnu.org for information about getting help.

As always, a vast number of people contributed to this GCC releases -- far too many to thank individually!