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https://issues.apache.org/jira/browse/STDCXX-862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589588#action_12589588
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Martin Sebor commented on STDCXX-862:
-------------------------------------
The question is: are compilers allowed to do this? Or put another way, is your
test case valid?
> [Sun C++ 5.9] 0.char test failed due to different binary representation of
> "long double ld1 = 0" and "long double ld2 = 0."
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: STDCXX-862
> URL: https://issues.apache.org/jira/browse/STDCXX-862
> Project: C++ Standard Library
> Issue Type: Bug
> Components: Tests
> Affects Versions: 4.2.0
> Environment: Linux
> Reporter: Farid Zaripov
> Assignee: Farid Zaripov
> Priority: Trivial
> Fix For: 4.2.1
>
> Original Estimate: 1h
> Time Spent: 1h
> Remaining Estimate: 0h
>
> {noformat}
> $ cat test.cpp && CC test.cpp -o test && ./test
> #include <cassert>
> #include <cstring>
> int main ()
> {
> long double ld1 = 0;
> long double ld2 = 0.;
>
> assert (ld1 == ld2);
> assert (0 == memcmp (&ld1, &ld2, sizeof (ld1)));
>
> return 0;
> }
> test: test.cpp:10: Assertion `0 == memcmp (&ld1, &ld2, sizeof (ld1))' failed.
> Aborted
> {noformat}
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