RHBA-2009:1375 - Bug Fix Advisory

Topic

The GNU Compiler Collection (GCC) version 4.4.0 is now available as
Technology Preview.

Description

The gcc44 packages provide the GNU Compiler Collection (GCC), which
includes GNU compilers and related support libraries for C, C++, and
Fortran programming languages. These packages also include libgomp, the GNU
implementation of the OpenMP Application Programming Interface for
multi-platform shared-memory parallel programming.

These new gcc43 packages provide a snapshot release of GCC version 4.4.0 as
a Technology Preview. The libgomp version included in this release supports
OpenMP version 3.0, a backward-compatible update to the OpenMP 2-series.
(BZ#494563)

This release also features the following bug fixes:

• GFortran provided improper DWARF definitions for array parameters (i.e.

missing upper bounds). This was caused by a bug in gcc/fortran/trans-decl.c
that provided incorrect debugging information for variable-length, non-desc
Fortran arrays. With this release, Gfortran now provides proper DWARF
definitions for arrays parameters. (BZ#459374)

• A bug in GFortran made it possible for an internal compiler error to

incorrectly escalate to a segmentation fault (instead of terminating the
compilation gracefully). An upstream fix for this bug is now included with
this release. (BZ#466928)

• Whenever gcc is used with the option -march=z9-ec or -march=z10, hardware

decimal floating point (DFP) support is used by default. (BZ#474367)

• An improper option (i.e. %global _use_internal_dependency_generator 0)

used during the build of libgomp in previous releases disabled "file
coloring". This caused RPM to erroneously detect a file conflict on
/usr/lib/libgomp.so.1.0.0 when installing libgomp from the Itanium
compatibility layer. This release includes a properly-built libgomp, which
resolves this issue. (BZ#503725)

Note:

• the -fgnu89-inline option instructs GCC to use traditional GNU semantics

for inline functions when in C99 mode. In this Technology Preview,

• fgnu89-inline is used by default. This is necessary because the Red Hat

Enterprise Linux 5 header files expect GNU inline semantics instead of ISO
C99 semantics. Further, these header files have not been adjusted to
request inline settings through attributes. (BZ#493929)

All users interested in testing gcc44 as a Technology Preview are advised
to install these packages. Note that this release replaces the gcc43
Technology Preview packages provided in previous releases.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 459374 - Bug report: Gfortran emits bad DWARF for array parameters.
• BZ - 466928 - gfortran43 internal error
• BZ - 493929 - -fvisibility=hidden is broken when inlining is enabled
• BZ - 494563 - Request package inclusion of gcc44

CVEs

(none)

References

(none)