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https://issues.apache.org/jira/browse/STDCXX-478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Sebor resolved STDCXX-478.
---------------------------------
Resolution: Fixed
Fix Version/s: 4.2
Resolved. Will close after a regression test has been added to the test suite.
> std::locale::operator==() inconsistent for locales with the same user-defined
> facets
> ------------------------------------------------------------------------------------
>
> Key: STDCXX-478
> URL: https://issues.apache.org/jira/browse/STDCXX-478
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 22. Localization
> Affects Versions: 4.1.3, 4.1.2
> Reporter: Martin Sebor
> Assignee: Martin Sebor
> Fix For: 4.2
>
>
> The program below is intended to take advantage of the stdcxx extension
> whereby two unnamed locales compare equal when they represent the exact same
> object (i.e., when all their facets are exactly same). The program passes the
> first assertion but aborts in the second one:
> $ cat t.cpp && make t && ./t
> #include <cassert>
> #include <cstdio>
> #include <locale>
> struct A: std::num_put<char, char*> { A (): std::num_put<char, char*>(1) { }
> };
> struct B: std::num_put<char, char*> { B (): std::num_put<char, char*>(1) { }
> };
> int main ()
> {
> const std::locale en ("en_US");
> const A* const a = new A;
> const B* const b = new B;
> {
> const std::locale usr1 (std::locale (en, a), b);
> const std::locale usr2 (std::locale (en, a), b);
> std::printf ("\"%s\" == \"%s\"\n",
> usr1.name ().c_str (), usr2.name ().c_str ());
> assert (usr1 == usr2);
> }
> {
> const std::locale usr1 (std::locale (en, a), b);
> const std::locale usr2 (std::locale (en, b), a);
> std::printf ("\"%s\" == \"%s\"\n",
> usr1.name ().c_str (), usr2.name ().c_str ());
> assert (usr1 == usr2);
> }
> }
> icc -c -I/home/sebor/stdcxx/include/ansi -D_RWSTDDEBUG -D_REENTRANT
> -I/home/sebor/stdcxx/include -I/build/sebor/stdcxx-icc-10.0.025-15S/include
> -I/home/sebor/stdcxx/examples/include -cxxlib-nostd -g -w1 t.cpp
> icc t.o -o t -cxxlib-nostd -lpthread
> -L/build/sebor/stdcxx-icc-10.0.025-15S/lib -lstd15S -lcxaguard -lsupc++ -lm
> "*" == "*"
> "*" == "*"
> t: t.cpp:32: int main(): Assertion `usr1 == usr2' failed.
> Aborted
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