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c++/9683: bug in initialization chains for static const variables from template classes
- From: dohashi at floccinaucinihilipilification dot net
- To: gcc-gnats at gcc dot gnu dot org
- Date: 13 Feb 2003 02:42:07 -0000
- Subject: c++/9683: bug in initialization chains for static const variables from template classes
- Reply-to: dohashi at floccinaucinihilipilification dot net
>Number: 9683
>Category: c++
>Synopsis: bug in initialization chains for static const variables from template classes
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Feb 13 02:46:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: Darin Ohashi
>Release: 3.2.1
>Organization:
>Environment:
slackware-current
Configured with: ../gcc-3.2.1/configure --prefix=/usr --enable-shared --enable-threads=posix --enable-__cxa_atexit --disable-checking --with-gnu-ld --verbose --target=i386-slackware-linux --host=i386-slackware-linux
Thread model: posix
gcc version 3.2.1
>Description:
Initialization chains of static const variables in templates does not work properly. If a variable is initialized by a chain of two variables, neither of which is referenced, then the intialization does not occur.
template <class data> const int foo<data>::a = 1;
template <class data> const int foo<data>::b = a;
template <class data> const int foo<data>::c = b;
template <class data> const int foo<data>::d = c;
c and d will not be initialized properly if a and b are not used. If a is used, c will be initiailized, but d will not be.
>How-To-Repeat:
hades:~/project/gcc-bug> g++ bug1.cc
hades:~/project/gcc-bug> ./a.out
0
0
hades:~/project/gcc-bug> g++ -DA_C bug1.cc
hades:~/project/gcc-bug> ./a.out
1
1
hades:~/project/gcc-bug> g++ -DA_D bug1.cc
hades:~/project/gcc-bug> ./a.out
1
0
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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