c++/9674: initialization of static class template members just by instantiation does not work

[benger at zib dot de]

>Number:         9674
>Category:       c++
>Synopsis:       initialization of static class template members just by instantiation does not work
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 12 15:16:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     benger@zib.de
>Release:        gcc 3.2.2
>Organization:
>Environment:
linux
>Description:
Initialization of static template members appears not to work.
The static initialization function is not called, unless the
static class member is actually used, but it should be
initialized regardless of possible use in the main() program
or somewhere else. SGI CC does correctly initialize the
class member.


litchi:/tmp $ g++ -v a.cc 
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --host=i386-redhat-linux --with-system-zlib --enable-__cxa_atexit
Thread model: posix
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
 /usr/lib/gcc-lib/i386-redhat-linux/3.2/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=0 -D__GXX_ABI_VERSION=102 -D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i386__ a.cc -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -quiet -dumpbase a.cc -version -o /tmp/ccuy0qpK.s
GNU CPP version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) (cpplib) (i386 Linux/ELF)
GNU C++ version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) (i386-redhat-linux)
        compiled by GNU C version 3.2 20020903 (Red Hat Linux 8.0 3.2-7).
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/3.2
 /usr/include/c++/3.2/i386-redhat-linux
 /usr/include/c++/3.2/backward
 /usr/local/include
 /usr/lib/gcc-lib/i386-redhat-linux/3.2/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/cc0QIg5k.o /tmp/ccuy0qpK.s
GNU assembler version 2.13.90.0.2 (i386-redhat-linux) using BFD version 2.13.90.0.2 20020802
 /usr/lib/gcc-lib/i386-redhat-linux/3.2/collect2 --eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/gcc-lib/i386-redhat-linux/3.2/../../../crt1.o /usr/lib/gcc-lib/i386-redhat-linux/3.2/../../../crti.o /usr/lib/gcc-lib/i386-redhat-linux/3.2/crtbegin.o -L/usr/lib/gcc-lib/i386-redhat-linux/3.2 -L/usr/lib/gcc-lib/i386-redhat-linux/3.2/../../.. /tmp/cc0QIg5k.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc-lib/i386-redhat-linux/3.2/crtend.o /usr/lib/gcc-lib/i386-redhat-linux/3.2/../../../crtn.o
litchi:/tmp $ a.out 
litchi:/tmp $ 
>How-To-Repeat:
compile the following code. it should print "heyda!",
but does not.

////////////////////////////////////////////////////
#include <stdio.h>

template <class x>
struct y
{
static bool z;
static bool a() { puts("heyda!"); return true; }
};

template <class x> 
  bool y<x>::z = y<x>::a();

main()
{
y<int> alpha;

// uncomment to see that using the member triggers a functional before main()
// if (alpha.z) puts("true");
// else         puts("false");
}

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: