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From "Scott (Yu) Zhong (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-364) [Linux] gcc 21.cwchar.cpp tm error
Date Mon, 19 Mar 2007 21:09:32 GMT
[Linux] gcc 21.cwchar.cpp tm error
----------------------------------

                 Key: STDCXX-364
                 URL: https://issues.apache.org/jira/browse/STDCXX-364
             Project: C++ Standard Library
          Issue Type: Bug
          Components: 21. Strings
    Affects Versions: 4.2
         Environment: Linux, gcc 3.4.6 - 4.1.2 
            Reporter: Scott (Yu) Zhong


getting this error:

/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:568: error: reference to 'tm' is ambiguous
/usr/include/../include/time.h:135: error: candidates are: struct tm
/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:550: error:                 struct Fallback::tm
/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:568: error: reference to 'tm' is ambiguous
/usr/include/../include/time.h:135: error: candidates are: struct tm
/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:550: error:                 struct Fallback::tm
/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:568: error: 'tm' does not name a type
/home/scottz/stdcxx/tests/strings/21.cwchar.cpp:577: error: 'test_tm' in namespace 'std::Nested'
does not name a type

-----------------------------------------------------------------------------------------

Martin Sebor [sebor@roguewave.com]

I was able to reproduce the same error with gcc 3.4.6.

The purpose of the test is to verify the conformance of the <cwchar> header WRT namespace
cleanliness (i.e., that symbols like struct tm are defined in namespace std and not also in
the global scope). The test is designed to fail at runtime (via assertions) rather than at
compile time but it looks like the implementation of the test (or maybe even its
design) is broken. In any case, the fact that the test doesn't compile suggests there is a
problem with the header.
The compilation errors for the simple program below confirm this. Can you open an issue for
this problem and reference this thread in the archive in the issue?

$ cat t.cpp && nice make t
#include <cwchar>

int main ()
{
     std::tm tmb = { 0 };
}

gcc -c -I/amd/devco/sebor/stdcxx/include/ansi -D_RWSTDDEBUG -I/amd/devco/sebor/stdcxx/include
-I/build/sebor/stdcxx-gcc-3.4.6-11S/include
-I/amd/devco/sebor/stdcxx/../rwtest
-I/amd/devco/sebor/stdcxx/../rwtest/include
-I/amd/devco/sebor/stdcxx/tests/include  -pedantic -nostdinc++ -g  -W -Wall -Wcast-qual -Winline
-Wshadow -Wwrite-strings -Wno-long-long 
-Wcast-align   t.cpp
t.cpp: In function `int main()':
t.cpp:5: error: `tm' is not a member of `std'
t.cpp:5: error: expected `;' before "tmb"
make: *** [t.o] Error 1

Thanks
Martin

$ cat t.cpp && nice make t
#include <cwchar>

int main ()
{
     std::tm tmb = { 0 };
}

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