c++/6611: Non-weak emission of `std::__default_alloc_template[...]' on platform(s) where it should be weak

[pfeifer at dbai dot tuwien dot ac dot at]

>Number:         6611
>Category:       c++
>Synopsis:       Non-weak emission of `std::__default_alloc_template[...]' on platform(s) where it should be weak
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 09 02:16:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Gerald Pfeifer, abstracted from confidential source by Loren Rittle
>Release:        mainline
>Organization:
>Environment:
i386-*-freebsd4.5 (by Loren)
i386-*-freebsd* (by Gerald)
i386-*-*linux* (by Gerald)
(some confusion, but I have never seen this issue with 3.1)
>Description:
The original test case is a large C++ program.  The failure
seen is a non-mergeable, duplicate template instantiation
of an implementation class in the libstdc++-v3.  Depending
on the exact order of method definitions (i.e. somewhat
fragile test case) and exactly what is being instantiated,
under some conditions,
std::__default_alloc_template<(bool)1, (int)0>::allocate(unsigned)
is emitted as a text reference instead of a weak reference.
>How-To-Repeat:
Run these commands:
g++ -c -Wall  -O1  planY.C -o planY.o
nm -C planY.o | grep allocate

See:
000006c4 T std::__default_alloc_template<(bool)1, (int)0>::allocate(unsigned)
This should be a weak (W) not a text (T) reference.
>Fix:

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