I have found an apparent bug in gcc 3.4.4 under Cygwin. The attached test case
(and the code it's derived from) works as expected with Cygwin gcc 3.3.3 with
the exact same Cygwin install except the compiler packages. It also works fine
with various versions of gcc on other platforms, including 3.4.2 (FC3) and 4.0
(FC4).
The test case is all of the files in the attached
gcc-3.4.4-bug-test-case.tar.gz. I sent the sample instead of the preprocessed
files because the bug only presents itself when the base class code is in a
library. If you include it in the main file or just link it in as a .o, the
code works fine.
gcc version (results of gcc -v)
Reading specs from /usr/lib/gcc/i686-pc-cygwin/3.4.4/specs
Configured with: /gcc/gcc-3.4.4/gcc-3.4.4-1/configure --verbose
--prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--enable-languages=c,ada,c++,d,f77,java,objc --enable-nls
--without-included-gettext --enable-version-specific-runtime-libs
--without-x --enable-libgcj --disable-java-awt --with-system-zlib
--enable-interpreter --disable-libgcj-debug --enable-threads=posix
--enable-java-gc=boehm --disable-win32-registry --enable-sjlj-exceptions
--enable-hash-synchronization --enable-libstdcxx-debug : (reconfigured)
Thread model: posix
gcc version 3.4.4 (cygming special) (gdc 0.12, using dmd 0.125)
system (results of uname -a)
CYGWIN_NT-5.0 trivia 1.5.17(0.129/4/2) 2005-05-25 19:38 i686 unknown
unknown Cygwin
command line (see Makefile and baselib.mak)
There are no compiler warnings or errors.
--
Summary: base class template specialization in library
Product: gcc
Version: 3.4.4
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: john dot gravley at cctechnol dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23093
