File-scope static declaration hides declaration in namespace

the following fails to compile:
// main.cpp
static int foo(int);
namespace FOO {
    int foo(int);
// blah, blah, blah implementation
// don't care whether this links
int
main(int argc,char* argv[])
    foo(1);
    return 0:
}returns:
Error: foo(int) is not a member of FOO.
This arises when compiling ACE w/ Sun Studio 9 C++ (5.6 Patch 117550-01):
OS_NS_sys_utsname.inl: Error: uname(utsname*) is not a member of ACE_OS.
Judging from the sys/utsname.h header file, I think this will only affect i386 (not sparc) builds since only then is uname defined statically.
I hadn't previously compiled ACE before applying the C++ compiler patch, so I don't know if this is new or old, but since I don't see anything wrong w/ the above code fragment or ACE, both of which compiler under other modern compilers (gcc 3.4.2), then I think it must be the compiler.
Any workaround ideas?

I don't mind helping you track down the problem. The command I used was just "CC -c" with no other arguments. (I used -c because the program won't link due to missing definitions.) I tried sparc and x86 versions.
Maybe your C++ implementation is corrupted. You can install multiple versions of Sun Studio on the same system, but each must be in a different base directory. If one release was installed in /opt, other releases must be installed elsewhere. If you install a new release on top of an existing release, you can have serious problems.
In addition, if you installed an Early Access version of a compiler, you must uninstall it before installing the official release.
Try running CC -V -c foobar.cc
The file foobar.cc does not need to exist.
You should see this:
CC: Sun C++ 5.6 Patch 117550-01 2004/10/12
ccfe: Sun C++ 5.6 Patch 117550-01 2004/10/12
Could not open input file "foobar.cc".
I searched bug reports for something like your test case, and didn't find an exact match. I did find a similar bug involving an extern "C" function in a namespace, but that bug was fixed in C++ 5.4.

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e.g.
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void AA();
public static abstract interface Aa{
} ........... this is allowed in Java.
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I already know that static mean one for class and interface has only abstract method.
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We
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Take this:
class test
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this will give illegal forward reference ....
but this will compile successfully ..
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Why second case is a compile success and not first .. as in second also test1 method is declared after its usage ..
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See the Java Language Spec section 12.4.1 'When Initialization Occurs
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Note the clause beginning 'may not refer to class variables'. And the authors give the reason for that restriction in the last sentence: detect circular initializations.
Then if you check that referenced section 8.3.2.3 you will find this
http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.3.2.3
8.3.2.3. Restrictions on the use of Fields during Initialization
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File-scope static declaration hides declaration in namespace

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